54915240 has 64 divisors (see below), whose sum is σ = 165288960. Its totient is φ = 14595840.

The previous prime is 54915233. The next prime is 54915247. The reversal of 54915240 is 4251945.

It is an interprime number because it is at equal distance from previous prime (54915233) and next prime (54915247).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 54915198 and 54915207.

It is not an unprimeable number, because it can be changed into a prime (54915247) 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, 49977 + ... + 51063.

It is an arithmetic number, because the mean of its divisors is an integer number (2582640).

Almost surely, 2^54915240 is an apocalyptic number.

It is an amenable number.

54915240 is an abundant number, since it is smaller than the sum of its proper divisors (110373720).

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

54915240 is a wasteful number, since it uses less digits than its factorization.

54915240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 54915240 is about 7410.4817657154. The cubic root of 54915240 is about 380.0997891206.

It can be divided in two parts, 54915 and 240, that added together give a palindrome (55155).

The spelling of 54915240 in words is "fifty-four million, nine hundred fifteen thousand, two hundred forty".