47661311 has 4 divisors (see below), whose sum is σ = 48823824. Its totient is φ = 46498800.

The previous prime is 47661307. The next prime is 47661343. The reversal of 47661311 is 11316674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47661311 - 2² = 47661307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47661391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581195 + ... + 581276.

It is an arithmetic number, because the mean of its divisors is an integer number (12205956).

Almost surely, 2^47661311 is an apocalyptic number.

47661311 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47661311 is a deficient number, since it is larger than the sum of its proper divisors (1162513).

47661311 is a wasteful number, since it uses less digits than its factorization.

47661311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162512.

The product of its digits is 3024, while the sum is 29.

The square root of 47661311 is about 6903.7171871391. The cubic root of 47661311 is about 362.5673241584.

Adding to 47661311 its reverse (11316674), we get a palindrome (58977985).

The spelling of 47661311 in words is "forty-seven million, six hundred sixty-one thousand, three hundred eleven".