55287995 has 16 divisors (see below), whose sum is σ = 80284608. Its totient is φ = 35681280.

The previous prime is 55287989. The next prime is 55287997. The reversal of 55287995 is 59978255.

It is not a de Polignac number, because 55287995 - 2⁴ = 55287979 is a prime.

It is a super-2 number, since 2×55287995² = 6113524782240050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55287997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45866 + ... + 47055.

It is an arithmetic number, because the mean of its divisors is an integer number (5017788).

Almost surely, 2^55287995 is an apocalyptic number.

55287995 is a deficient number, since it is larger than the sum of its proper divisors (24996613).

55287995 is a wasteful number, since it uses less digits than its factorization.

55287995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92950.

The product of its digits is 1134000, while the sum is 50.

The square root of 55287995 is about 7435.5897546866. The cubic root of 55287995 is about 380.9578674049.

The spelling of 55287995 in words is "fifty-five million, two hundred eighty-seven thousand, nine hundred ninety-five".