55595280 has 160 divisors (see below), whose sum is σ = 188487936. Its totient is φ = 13473792.

The previous prime is 55595263. The next prime is 55595297. The reversal of 55595280 is 8259555.

It is an interprime number because it is at equal distance from previous prime (55595263) and next prime (55595297).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 321274 + ... + 321446.

Almost surely, 2^55595280 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 55595280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94243968).

55595280 is an abundant number, since it is smaller than the sum of its proper divisors (132892656).

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

55595280 is a wasteful number, since it uses less digits than its factorization.

55595280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The square root of 55595280 is about 7456.2242455549. The cubic root of 55595280 is about 381.6623387910.

The spelling of 55595280 in words is "fifty-five million, five hundred ninety-five thousand, two hundred eighty".