56587442 has 4 divisors (see below), whose sum is σ = 84881166. Its totient is φ = 28293720.

The previous prime is 56587423. The next prime is 56587451. The reversal of 56587442 is 24478565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24478565 = 5 ⋅4895713.

It can be written as a sum of positive squares in only one way, i.e., 50822641 + 5764801 = 7129^2 + 2401^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56587442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14146859 + ... + 14146862.

Almost surely, 2^56587442 is an apocalyptic number.

56587442 is a deficient number, since it is larger than the sum of its proper divisors (28293724).

56587442 is a wasteful number, since it uses less digits than its factorization.

56587442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28293723.

The product of its digits is 268800, while the sum is 41.

The square root of 56587442 is about 7522.4624957523. The cubic root of 56587442 is about 383.9193669311.

The spelling of 56587442 in words is "fifty-six million, five hundred eighty-seven thousand, four hundred forty-two".