55699080 has 64 divisors (see below), whose sum is σ = 168125760. Its totient is φ = 14761728.

The previous prime is 55699079. The next prime is 55699081. The reversal of 55699080 is 8099655.

It is an interprime number because it is at equal distance from previous prime (55699079) and next prime (55699081).

It is not an unprimeable number, because it can be changed into a prime (55699081) 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, 19419 + ... + 22101.

It is an arithmetic number, because the mean of its divisors is an integer number (2626965).

Almost surely, 2^55699080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55699080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84062880).

55699080 is an abundant number, since it is smaller than the sum of its proper divisors (112426680).

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

55699080 is a wasteful number, since it uses less digits than its factorization.

55699080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 55699080 is about 7463.1816271614. The cubic root of 55699080 is about 381.8997205780.

The spelling of 55699080 in words is "fifty-five million, six hundred ninety-nine thousand, eighty".