54500391 has 16 divisors (see below), whose sum is σ = 88081920. Its totient is φ = 33030360.

The previous prime is 54500353. The next prime is 54500429. The reversal of 54500391 is 19300545.

It is an interprime number because it is at equal distance from previous prime (54500353) and next prime (54500429).

It is not a de Polignac number, because 54500391 - 2¹¹ = 54498343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54500321) 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, 91455 + ... + 92048.

It is an arithmetic number, because the mean of its divisors is an integer number (5505120).

Almost surely, 2^54500391 is an apocalyptic number.

54500391 is a deficient number, since it is larger than the sum of its proper divisors (33581529).

54500391 is a wasteful number, since it uses less digits than its factorization.

54500391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183523 (or 183517 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 54500391 is about 7382.4380119307. The cubic root of 54500391 is about 379.1402330296.

The spelling of 54500391 in words is "fifty-four million, five hundred thousand, three hundred ninety-one".