45957978 has 36 divisors (see below), whose sum is σ = 109456074. Its totient is φ = 13926000.

The previous prime is 45957973. The next prime is 45957983. The reversal of 45957978 is 87975954.

It is an interprime number because it is at equal distance from previous prime (45957973) and next prime (45957983).

It can be written as a sum of positive squares in only one way, i.e., 43125489 + 2832489 = 6567^2 + 1683^2 .

It is a super-2 number, since 2×45957978² = 4224271483696968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45957971) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8373 + ... + 12728.

Almost surely, 2^45957978 is an apocalyptic number.

45957978 is an abundant number, since it is smaller than the sum of its proper divisors (63498096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45957978 is a wasteful number, since it uses less digits than its factorization.

45957978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21131 (or 21117 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 45957978 is about 6779.2313723607. The cubic root of 45957978 is about 358.1956474569.

The spelling of 45957978 in words is "forty-five million, nine hundred fifty-seven thousand, nine hundred seventy-eight".