45057831 has 16 divisors (see below), whose sum is σ = 73941504. Its totient is φ = 23766624.

The previous prime is 45057829. The next prime is 45057839. The reversal of 45057831 is 13875054.

It is not a de Polignac number, because 45057831 - 2¹ = 45057829 is a prime.

It is a super-2 number, since 2×45057831² = 4060416268849122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45057792 and 45057801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45057839) 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, 82251 + ... + 82796.

It is an arithmetic number, because the mean of its divisors is an integer number (4621344).

Almost surely, 2^45057831 is an apocalyptic number.

45057831 is a deficient number, since it is larger than the sum of its proper divisors (28883673).

45057831 is a wasteful number, since it uses less digits than its factorization.

45057831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165070.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 45057831 is about 6712.5130167472. The cubic root of 45057831 is about 355.8416346289.

The spelling of 45057831 in words is "forty-five million, fifty-seven thousand, eight hundred thirty-one".