55891812404 has 24 divisors (see below), whose sum is σ = 101348645160. Its totient is φ = 26938203264.

The previous prime is 55891812401. The next prime is 55891812437. The reversal of 55891812404 is 40421819855.

It can be written as a sum of positive squares in 4 ways, for example, as 4701844900 + 51189967504 = 68570^2 + 226252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55891812401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321899 + ... + 464114.

It is an arithmetic number, because the mean of its divisors is an integer number (4222860215).

Almost surely, 2^55891812404 is an apocalyptic number.

It is an amenable number.

55891812404 is a deficient number, since it is larger than the sum of its proper divisors (45456832756).

55891812404 is a wasteful number, since it uses less digits than its factorization.

55891812404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786659 (or 786657 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 55891812404 in words is "fifty-five billion, eight hundred ninety-one million, eight hundred twelve thousand, four hundred four".