45931551 has 4 divisors (see below), whose sum is σ = 61242072. Its totient is φ = 30621032.

The previous prime is 45931547. The next prime is 45931573. The reversal of 45931551 is 15513954.

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 45931551 - 2² = 45931547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45931591) 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, 7655256 + ... + 7655261.

It is an arithmetic number, because the mean of its divisors is an integer number (15310518).

Almost surely, 2^45931551 is an apocalyptic number.

45931551 is a deficient number, since it is larger than the sum of its proper divisors (15310521).

45931551 is a wasteful number, since it uses less digits than its factorization.

45931551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15310520.

The product of its digits is 13500, while the sum is 33.

The square root of 45931551 is about 6777.2819773121. The cubic root of 45931551 is about 358.1269771065.

The spelling of 45931551 in words is "forty-five million, nine hundred thirty-one thousand, five hundred fifty-one".