45445731 has 16 divisors (see below), whose sum is σ = 62448288. Its totient is φ = 29376000.

The previous prime is 45445727. The next prime is 45445747. The reversal of 45445731 is 13754454.

It is not a de Polignac number, because 45445731 - 2² = 45445727 is a prime.

It is a super-2 number, since 2×45445731² = 4130628932248722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45445692 and 45445701.

It is not an unprimeable number, because it can be changed into a prime (45445031) 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, 44001 + ... + 45021.

It is an arithmetic number, because the mean of its divisors is an integer number (3903018).

Almost surely, 2^45445731 is an apocalyptic number.

45445731 is a deficient number, since it is larger than the sum of its proper divisors (17002557).

45445731 is a wasteful number, since it uses less digits than its factorization.

45445731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462.

The product of its digits is 33600, while the sum is 33.

The square root of 45445731 is about 6741.3448954938. The cubic root of 45445731 is about 356.8598575860.

The spelling of 45445731 in words is "forty-five million, four hundred forty-five thousand, seven hundred thirty-one".