45881507 has 4 divisors (see below), whose sum is σ = 52436016. Its totient is φ = 39327000.

The previous prime is 45881489. The next prime is 45881531. The reversal of 45881507 is 70518854.

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 45881507 - 2¹⁸ = 45619363 is a prime.

It is a super-2 number, since 2×45881507² = 4210225369182098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45881807) 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, 3277244 + ... + 3277257.

It is an arithmetic number, because the mean of its divisors is an integer number (13109004).

Almost surely, 2^45881507 is an apocalyptic number.

45881507 is a deficient number, since it is larger than the sum of its proper divisors (6554509).

45881507 is an equidigital number, since it uses as much as digits as its factorization.

45881507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554508.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 45881507 is about 6773.5889305449. The cubic root of 45881507 is about 357.9968659672.

The spelling of 45881507 in words is "forty-five million, eight hundred eighty-one thousand, five hundred seven".