56897090 has 32 divisors (see below), whose sum is σ = 107744256. Its totient is φ = 21602880.

The previous prime is 56897089. The next prime is 56897107. The reversal of 56897090 is 9079865.

56897090 = 1010² + 1011² + ... + 1062².

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14699 + ... + 18161.

It is an arithmetic number, because the mean of its divisors is an integer number (3367008).

Almost surely, 2^56897090 is an apocalyptic number.

56897090 is a deficient number, since it is larger than the sum of its proper divisors (50847166).

56897090 is a wasteful number, since it uses less digits than its factorization.

56897090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 56897090 is about 7543.0159750593. The cubic root of 56897090 is about 384.6183658538.

Subtracting from 56897090 its reverse (9079865), we obtain a square (47817225 = 6915²).

The spelling of 56897090 in words is "fifty-six million, eight hundred ninety-seven thousand, ninety".