45054981 has 32 divisors (see below), whose sum is σ = 71435520. Its totient is φ = 27965952.

The previous prime is 45054979. The next prime is 45054991. The reversal of 45054981 is 18945054.

It is not a de Polignac number, because 45054981 - 2¹ = 45054979 is a prime.

It is a super-2 number, since 2×45054981² = 4059902625820722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45054991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46801 + ... + 47753.

It is an arithmetic number, because the mean of its divisors is an integer number (2232360).

Almost surely, 2^45054981 is an apocalyptic number.

It is an amenable number.

45054981 is a deficient number, since it is larger than the sum of its proper divisors (26380539).

45054981 is a wasteful number, since it uses less digits than its factorization.

45054981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 45054981 is about 6712.3007232990. The cubic root of 45054981 is about 355.8341319002.

The spelling of 45054981 in words is "forty-five million, fifty-four thousand, nine hundred eighty-one".