45661631 has 8 divisors (see below), whose sum is σ = 47394720. Its totient is φ = 43939168.

The previous prime is 45661621. The next prime is 45661691. The reversal of 45661631 is 13616654.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45661631 - 2¹⁰ = 45660607 is a prime.

It is a super-2 number, since 2×45661631² = 4169969091160322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45661621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6710 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (5924340).

Almost surely, 2^45661631 is an apocalyptic number.

45661631 is a deficient number, since it is larger than the sum of its proper divisors (1733089).

45661631 is a wasteful number, since it uses less digits than its factorization.

45661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313.

The product of its digits is 12960, while the sum is 32.

The square root of 45661631 is about 6757.3390472878. The cubic root of 45661631 is about 357.4240789438.

The spelling of 45661631 in words is "forty-five million, six hundred sixty-one thousand, six hundred thirty-one".