45927981 has 12 divisors (see below), whose sum is σ = 72371520. Its totient is φ = 27835080.

The previous prime is 45927979. The next prime is 45927991. The reversal of 45927981 is 18972954.

It is not a de Polignac number, because 45927981 - 2¹ = 45927979 is a prime.

It is a super-2 number, since 2×45927981² = 4218758877472722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45927961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231861 + ... + 232058.

It is an arithmetic number, because the mean of its divisors is an integer number (6030960).

Almost surely, 2^45927981 is an apocalyptic number.

It is an amenable number.

45927981 is a deficient number, since it is larger than the sum of its proper divisors (26443539).

45927981 is a wasteful number, since it uses less digits than its factorization.

45927981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463936 (or 463933 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 45927981 is about 6777.0185922720. The cubic root of 45927981 is about 358.1176984705.

The spelling of 45927981 in words is "forty-five million, nine hundred twenty-seven thousand, nine hundred eighty-one".