56491642 has 4 divisors (see below), whose sum is σ = 84737466. Its totient is φ = 28245820.

The previous prime is 56491627. The next prime is 56491651. The reversal of 56491642 is 24619465.

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

It can be written as a sum of positive squares in only one way, i.e., 29149201 + 27342441 = 5399^2 + 5229^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14122909 + ... + 14122912.

Almost surely, 2^56491642 is an apocalyptic number.

56491642 is a deficient number, since it is larger than the sum of its proper divisors (28245824).

56491642 is a wasteful number, since it uses less digits than its factorization.

56491642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28245823.

The product of its digits is 51840, while the sum is 37.

The square root of 56491642 is about 7516.0922027341. The cubic root of 56491642 is about 383.7025918014.

The spelling of 56491642 in words is "fifty-six million, four hundred ninety-one thousand, six hundred forty-two".