2621145 has 32 divisors (see below), whose sum is σ = 4682880. Its totient is φ = 1244160.

The previous prime is 2621137. The next prime is 2621147. The reversal of 2621145 is 5411262.

It is not a de Polignac number, because 2621145 - 2³ = 2621137 is a prime.

It is a super-2 number, since 2×2621145² = 13740802222050, which contains 22 as substring.

It is a Curzon number.

2621145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2621147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4575 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (146340).

2^2621145 is an apocalyptic number.

It is an amenable number.

2621145 is a deficient number, since it is larger than the sum of its proper divisors (2061735).

2621145 is a wasteful number, since it uses less digits than its factorization.

2621145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its digits is 480, while the sum is 21.

The square root of 2621145 is about 1618.9950586707. The cubic root of 2621145 is about 137.8786477819.

The spelling of 2621145 in words is "two million, six hundred twenty-one thousand, one hundred forty-five".