55401790 has 8 divisors (see below), whose sum is σ = 99723240. Its totient is φ = 22160712.

The previous prime is 55401763. The next prime is 55401811. The reversal of 55401790 is 9710455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770080 + ... + 2770099.

It is an arithmetic number, because the mean of its divisors is an integer number (12465405).

Almost surely, 2^55401790 is an apocalyptic number.

55401790 is a deficient number, since it is larger than the sum of its proper divisors (44321450).

55401790 is a wasteful number, since it uses less digits than its factorization.

55401790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540186.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 55401790 is about 7443.2378707119. The cubic root of 55401790 is about 381.2190536558.

The spelling of 55401790 in words is "fifty-five million, four hundred one thousand, seven hundred ninety".