55360389 has 32 divisors (see below), whose sum is σ = 87678976. Its totient is φ = 30404160.

The previous prime is 55360369. The next prime is 55360411. The reversal of 55360389 is 98306355.

It is not a de Polignac number, because 55360389 - 2⁸ = 55360133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55360339) 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, 180174 + ... + 180480.

It is an arithmetic number, because the mean of its divisors is an integer number (2739968).

Almost surely, 2^55360389 is an apocalyptic number.

It is an amenable number.

55360389 is a deficient number, since it is larger than the sum of its proper divisors (32318587).

55360389 is a wasteful number, since it uses less digits than its factorization.

55360389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 55360389 is about 7440.4562360113. The cubic root of 55360389 is about 381.1240700635.

The spelling of 55360389 in words is "fifty-five million, three hundred sixty thousand, three hundred eighty-nine".