55162509 has 8 divisors (see below), whose sum is σ = 73675200. Its totient is φ = 36712416.

The previous prime is 55162493. The next prime is 55162511. The reversal of 55162509 is 90526155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55162509 - 2⁴ = 55162493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55162509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55162309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13552 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (9209400).

Almost surely, 2^55162509 is an apocalyptic number.

It is an amenable number.

55162509 is a deficient number, since it is larger than the sum of its proper divisors (18512691).

55162509 is a wasteful number, since it uses less digits than its factorization.

55162509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31299.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 55162509 is about 7427.1467603650. The cubic root of 55162509 is about 380.6694317215.

The spelling of 55162509 in words is "fifty-five million, one hundred sixty-two thousand, five hundred nine".