55623894 has 16 divisors (see below), whose sum is σ = 111493632. Its totient is φ = 18500328.

The previous prime is 55623877. The next prime is 55623907. The reversal of 55623894 is 49832655.

It is a super-3 number, since 3×55623894³ (a number of 24 digits) contains 333 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 7234 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (6968352).

Almost surely, 2^55623894 is an apocalyptic number.

55623894 is an abundant number, since it is smaller than the sum of its proper divisors (55869738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55623894 is a wasteful number, since it uses less digits than its factorization.

55623894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20491.

The product of its digits is 259200, while the sum is 42.

The square root of 55623894 is about 7458.1427983111. The cubic root of 55623894 is about 381.7278060578.

The spelling of 55623894 in words is "fifty-five million, six hundred twenty-three thousand, eight hundred ninety-four".