55423215 has 24 divisors (see below), whose sum is σ = 100245600. Its totient is φ = 28273344.

The previous prime is 55423157. The next prime is 55423217. The reversal of 55423215 is 51232455.

It is a happy number.

It is not a de Polignac number, because 55423215 - 2⁸ = 55422959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55423217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25740 + ... + 27809.

It is an arithmetic number, because the mean of its divisors is an integer number (4176900).

Almost surely, 2^55423215 is an apocalyptic number.

55423215 is a deficient number, since it is larger than the sum of its proper divisors (44822385).

55423215 is a wasteful number, since it uses less digits than its factorization.

55423215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53583 (or 53580 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55423215 is about 7444.6769573971. The cubic root of 55423215 is about 381.2681890453.

The spelling of 55423215 in words is "fifty-five million, four hundred twenty-three thousand, two hundred fifteen".