45979681 has 4 divisors (see below), whose sum is σ = 50159664. Its totient is φ = 41799700.

The previous prime is 45979663. The next prime is 45979699. The reversal of 45979681 is 18697954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (45979663) and next prime (45979699).

It is a cyclic number.

It is not a de Polignac number, because 45979681 - 2¹³ = 45971489 is a prime.

It is a super-2 number, since 2×45979681² = 4228262129723522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45979631) 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, 2089975 + ... + 2089996.

It is an arithmetic number, because the mean of its divisors is an integer number (12539916).

Almost surely, 2^45979681 is an apocalyptic number.

It is an amenable number.

45979681 is a deficient number, since it is larger than the sum of its proper divisors (4179983).

45979681 is a wasteful number, since it uses less digits than its factorization.

45979681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179982.

The product of its digits is 544320, while the sum is 49.

The square root of 45979681 is about 6780.8318811190. The cubic root of 45979681 is about 358.2520228466.

The spelling of 45979681 in words is "forty-five million, nine hundred seventy-nine thousand, six hundred eighty-one".