55807698 has 8 divisors (see below), whose sum is σ = 111615408. Its totient is φ = 18602564.

The previous prime is 55807639. The next prime is 55807699. The reversal of 55807698 is 89670855.

It is a sphenic number, since it is the product of 3 distinct primes.

55807698 is an admirable number.

It is a super-2 number, since 2×55807698² = 6228998312118408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55807699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4650636 + ... + 4650647.

It is an arithmetic number, because the mean of its divisors is an integer number (13951926).

Almost surely, 2^55807698 is an apocalyptic number.

55807698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55807698 is a wasteful number, since it uses less digits than its factorization.

55807698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301288.

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

The square root of 55807698 is about 7470.4550062228. The cubic root of 55807698 is about 382.1478051608.

The spelling of 55807698 in words is "fifty-five million, eight hundred seven thousand, six hundred ninety-eight".