57077442 has 12 divisors (see below), whose sum is σ = 123667830. Its totient is φ = 19025808.

The previous prime is 57077429. The next prime is 57077443. The reversal of 57077442 is 24477075.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 56115081 + 962361 = 7491^2 + 981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57077397 and 57077406.

It is not an unprimeable number, because it can be changed into a prime (57077443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1585467 + ... + 1585502.

Almost surely, 2^57077442 is an apocalyptic number.

57077442 is an abundant number, since it is smaller than the sum of its proper divisors (66590388).

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

57077442 is a wasteful number, since it uses less digits than its factorization.

57077442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170977 (or 3170974 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 57077442 is about 7554.9614161821. The cubic root of 57077442 is about 385.0243240943.

The spelling of 57077442 in words is "fifty-seven million, seventy-seven thousand, four hundred forty-two".