55615416 has 32 divisors (see below), whose sum is σ = 139242240. Its totient is φ = 18511328.

The previous prime is 55615409. The next prime is 55615423. The reversal of 55615416 is 61451655.

It is an interprime number because it is at equal distance from previous prime (55615409) and next prime (55615423).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21505 + ... + 23951.

It is an arithmetic number, because the mean of its divisors is an integer number (4351320).

Almost surely, 2^55615416 is an apocalyptic number.

It is an amenable number.

55615416 is an abundant number, since it is smaller than the sum of its proper divisors (83626824).

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

55615416 is a wasteful number, since it uses less digits than its factorization.

55615416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403 (or 3399 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 55615416 is about 7457.5744045903. The cubic root of 55615416 is about 381.7084111986.

The spelling of 55615416 in words is "fifty-five million, six hundred fifteen thousand, four hundred sixteen".