56742057 has 6 divisors (see below), whose sum is σ = 81960762. Its totient is φ = 37828032.

The previous prime is 56742047. The next prime is 56742071. The reversal of 56742057 is 75024765.

56742057 is a `hidden beast` number, since 567 + 42 + 0 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 15023376 = 6459^2 + 3876^2 .

It is not a de Polignac number, because 56742057 - 2¹¹ = 56740009 is a prime.

It is a super-2 number, since 2×56742057² = 6439322065182498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56742047) 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, 3152328 + ... + 3152345.

It is an arithmetic number, because the mean of its divisors is an integer number (13660127).

Almost surely, 2^56742057 is an apocalyptic number.

It is an amenable number.

56742057 is a deficient number, since it is larger than the sum of its proper divisors (25218705).

56742057 is a wasteful number, since it uses less digits than its factorization.

56742057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304679 (or 6304676 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 56742057 is about 7532.7323727848. The cubic root of 56742057 is about 384.2687124720.

It can be divided in two parts, 567 and 42057, that added together give a palindrome (42624).

The spelling of 56742057 in words is "fifty-six million, seven hundred forty-two thousand, fifty-seven".