57772145 has 4 divisors (see below), whose sum is σ = 69326580. Its totient is φ = 46217712.

The previous prime is 57772129. The next prime is 57772163. The reversal of 57772145 is 54127775.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26142769 + 31629376 = 5113^2 + 5624^2 .

It is a cyclic number.

It is not a de Polignac number, because 57772145 - 2⁴ = 57772129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57772099 and 57772108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5777210 + ... + 5777219.

It is an arithmetic number, because the mean of its divisors is an integer number (17331645).

Almost surely, 2^57772145 is an apocalyptic number.

It is an amenable number.

57772145 is a deficient number, since it is larger than the sum of its proper divisors (11554435).

57772145 is a wasteful number, since it uses less digits than its factorization.

57772145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11554434.

The product of its digits is 68600, while the sum is 38.

The square root of 57772145 is about 7600.7989711609. The cubic root of 57772145 is about 386.5801030791.

The spelling of 57772145 in words is "fifty-seven million, seven hundred seventy-two thousand, one hundred forty-five".