55393895 has 16 divisors (see below), whose sum is σ = 67465440. Its totient is φ = 43659264.

The previous prime is 55393889. The next prime is 55393901. The reversal of 55393895 is 59839355.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55393889) and next prime (55393901).

It is a cyclic number.

It is not a de Polignac number, because 55393895 - 2⁶ = 55393831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131996 + ... + 132414.

It is an arithmetic number, because the mean of its divisors is an integer number (4216590).

Almost surely, 2^55393895 is an apocalyptic number.

55393895 is a deficient number, since it is larger than the sum of its proper divisors (12071545).

55393895 is a wasteful number, since it uses less digits than its factorization.

55393895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its digits is 729000, while the sum is 47.

The square root of 55393895 is about 7442.7075046652. The cubic root of 55393895 is about 381.2009443288.

The spelling of 55393895 in words is "fifty-five million, three hundred ninety-three thousand, eight hundred ninety-five".