55807895 has 32 divisors (see below), whose sum is σ = 79652160. Its totient is φ = 37002240.

The previous prime is 55807879. The next prime is 55807903. The reversal of 55807895 is 59870855.

It is not a de Polignac number, because 55807895 - 2⁴ = 55807879 is a prime.

It is a super-2 number, since 2×55807895² = 6229042288662050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63197 + ... + 64073.

It is an arithmetic number, because the mean of its divisors is an integer number (2489130).

Almost surely, 2^55807895 is an apocalyptic number.

55807895 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55807895 is a deficient number, since it is larger than the sum of its proper divisors (23844265).

55807895 is a wasteful number, since it uses less digits than its factorization.

55807895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995.

The product of its (nonzero) digits is 504000, while the sum is 47.

The square root of 55807895 is about 7470.4681914857. The cubic root of 55807895 is about 382.1482548181.

The spelling of 55807895 in words is "fifty-five million, eight hundred seven thousand, eight hundred ninety-five".