45921031 has 4 divisors (see below), whose sum is σ = 49453432. Its totient is φ = 42388632.

The previous prime is 45920999. The next prime is 45921047. The reversal of 45921031 is 13012954.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45921031 - 2⁵ = 45920999 is a prime.

It is a super-2 number, since 2×45921031² = 4217482176205922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45920987 and 45921005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45925031) 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, 1766181 + ... + 1766206.

It is an arithmetic number, because the mean of its divisors is an integer number (12363358).

Almost surely, 2^45921031 is an apocalyptic number.

45921031 is a deficient number, since it is larger than the sum of its proper divisors (3532401).

45921031 is a wasteful number, since it uses less digits than its factorization.

45921031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532400.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 45921031 is about 6776.5058105192. The cubic root of 45921031 is about 358.0996336401.

Adding to 45921031 its reverse (13012954), we get a palindrome (58933985).

The spelling of 45921031 in words is "forty-five million, nine hundred twenty-one thousand, thirty-one".