55087698 has 32 divisors (see below), whose sum is σ = 112484736. Its totient is φ = 17981568.

The previous prime is 55087657. The next prime is 55087699. The reversal of 55087698 is 89678055.

It is not an unprimeable number, because it can be changed into a prime (55087699) 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, 75411 + ... + 76137.

It is an arithmetic number, because the mean of its divisors is an integer number (3515148).

Almost surely, 2^55087698 is an apocalyptic number.

55087698 is an abundant number, since it is smaller than the sum of its proper divisors (57397038).

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

55087698 is a wasteful number, since it uses less digits than its factorization.

55087698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 55087698 is about 7422.1087300039. The cubic root of 55087698 is about 380.4972668152.

The spelling of 55087698 in words is "fifty-five million, eighty-seven thousand, six hundred ninety-eight".