55542415 has 16 divisors (see below), whose sum is σ = 71128800. Its totient is φ = 41513472.

The previous prime is 55542407. The next prime is 55542419. The reversal of 55542415 is 51424555.

It is a cyclic number.

It is not a de Polignac number, because 55542415 - 2³ = 55542407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55542419) 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, 2931 + ... + 10939.

It is an arithmetic number, because the mean of its divisors is an integer number (4445550).

Almost surely, 2^55542415 is an apocalyptic number.

55542415 is a deficient number, since it is larger than the sum of its proper divisors (15586385).

55542415 is a wasteful number, since it uses less digits than its factorization.

55542415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106.

The product of its digits is 20000, while the sum is 31.

The square root of 55542415 is about 7452.6783776036. The cubic root of 55542415 is about 381.5413274500.

The spelling of 55542415 in words is "fifty-five million, five hundred forty-two thousand, four hundred fifteen".