45978077 has 4 divisors (see below), whose sum is σ = 45997056. Its totient is φ = 45959100.

The previous prime is 45978061. The next prime is 45978089. The reversal of 45978077 is 77087954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45978077 - 2⁴ = 45978061 is a prime.

It is a super-2 number, since 2×45978077² = 4227967129235858, 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 (45978017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5213 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (11499264).

Almost surely, 2^45978077 is an apocalyptic number.

It is an amenable number.

45978077 is a deficient number, since it is larger than the sum of its proper divisors (18979).

45978077 is a wasteful number, since it uses less digits than its factorization.

45978077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18978.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 45978077 is about 6780.7136055138. The cubic root of 45978077 is about 358.2478569272.

The spelling of 45978077 in words is "forty-five million, nine hundred seventy-eight thousand, seventy-seven".