45978427 has 12 divisors (see below), whose sum is σ = 52284960. Its totient is φ = 40354160.

The previous prime is 45978409. The next prime is 45978437. The reversal of 45978427 is 72487954.

It is not a de Polignac number, because 45978427 - 2¹⁵ = 45945659 is a prime.

It is a super-2 number, since 2×45978427² = 4228031498788658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45978437) 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, 3043 + ... + 10060.

It is an arithmetic number, because the mean of its divisors is an integer number (4357080).

Almost surely, 2^45978427 is an apocalyptic number.

45978427 is a deficient number, since it is larger than the sum of its proper divisors (6306533).

45978427 is a wasteful number, since it uses less digits than its factorization.

45978427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13154 (or 13143 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 45978427 is about 6780.7394139577. The cubic root of 45978427 is about 358.2487659578.

The spelling of 45978427 in words is "forty-five million, nine hundred seventy-eight thousand, four hundred twenty-seven".