55549415 has 4 divisors (see below), whose sum is σ = 66659304. Its totient is φ = 44439528.

The previous prime is 55549411. The next prime is 55549433. The reversal of 55549415 is 51494555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55549415 - 2² = 55549411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55549411) 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, 5554937 + ... + 5554946.

It is an arithmetic number, because the mean of its divisors is an integer number (16664826).

Almost surely, 2^55549415 is an apocalyptic number.

55549415 is a deficient number, since it is larger than the sum of its proper divisors (11109889).

55549415 is a wasteful number, since it uses less digits than its factorization.

55549415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109888.

The product of its digits is 90000, while the sum is 38.

The square root of 55549415 is about 7453.1479926270. The cubic root of 55549415 is about 381.5573553037.

The spelling of 55549415 in words is "fifty-five million, five hundred forty-nine thousand, four hundred fifteen".