2530732281 has 16 divisors (see below), whose sum is σ = 4206931968. Its totient is φ = 1314666000.

The previous prime is 2530732279. The next prime is 2530732291. The reversal of 2530732281 is 1822370352.

It is not a de Polignac number, because 2530732281 - 2¹ = 2530732279 is a prime.

It is a super-2 number, since 2×2530732281² = 12809211756190925922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2530732201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5477545 + ... + 5478006.

It is an arithmetic number, because the mean of its divisors is an integer number (262933248).

Almost surely, 2^2530732281 is an apocalyptic number.

2530732281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2530732281 is a deficient number, since it is larger than the sum of its proper divisors (1676199687).

2530732281 is a wasteful number, since it uses less digits than its factorization.

2530732281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10955572.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2530732281 is about 50306.3840978459. The cubic root of 2530732281 is about 1362.7475239326.

The spelling of 2530732281 in words is "two billion, five hundred thirty million, seven hundred thirty-two thousand, two hundred eighty-one".