54136520 has 32 divisors (see below), whose sum is σ = 122627520. Its totient is φ = 21508800.

The previous prime is 54136507. The next prime is 54136541. The reversal of 54136520 is 2563145.

It is a self number, because there is not a number n which added to its sum of digits gives 54136520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (3832110).

Almost surely, 2^54136520 is an apocalyptic number.

It is an amenable number.

54136520 is an abundant number, since it is smaller than the sum of its proper divisors (68491000).

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

54136520 is a wasteful number, since it uses less digits than its factorization.

54136520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9125 (or 9121 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 54136520 is about 7357.7523741969. The cubic root of 54136520 is about 378.2945736242.

Adding to 54136520 its reverse (2563145), we get a palindrome (56699665).

The spelling of 54136520 in words is "fifty-four million, one hundred thirty-six thousand, five hundred twenty".