55459215 has 32 divisors (see below), whose sum is σ = 112680960. Its totient is φ = 25352352.

The previous prime is 55459213. The next prime is 55459231. The reversal of 55459215 is 51295455.

55459215 is a `hidden beast` number, since 5 + 54 + 592 + 15 = 666.

It is not a de Polignac number, because 55459215 - 2¹ = 55459213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55459215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55459213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28399 + ... + 30288.

It is an arithmetic number, because the mean of its divisors is an integer number (3521280).

Almost surely, 2^55459215 is an apocalyptic number.

55459215 is an abundant number, since it is smaller than the sum of its proper divisors (57221745).

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

55459215 is a wasteful number, since it uses less digits than its factorization.

55459215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58708 (or 58702 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 55459215 is about 7447.0943998314. The cubic root of 55459215 is about 381.3507217533.

The spelling of 55459215 in words is "fifty-five million, four hundred fifty-nine thousand, two hundred fifteen".