51478524 has 48 divisors (see below), whose sum is σ = 140492800. Its totient is φ = 16255728.

The previous prime is 51478519. The next prime is 51478591. The reversal of 51478524 is 42587415.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10492 + ... + 14595.

Almost surely, 2^51478524 is an apocalyptic number.

51478524 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51478524 is an abundant number, since it is smaller than the sum of its proper divisors (89014276).

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

51478524 is a wasteful number, since it uses less digits than its factorization.

51478524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25119 (or 25111 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 51478524 is about 7174.8535873563. The cubic root of 51478524 is about 371.9992195613. Note that the first 3 decimals are identical.

The spelling of 51478524 in words is "fifty-one million, four hundred seventy-eight thousand, five hundred twenty-four".