51524540 has 12 divisors (see below), whose sum is σ = 108201576. Its totient is φ = 20609808.

The previous prime is 51524537. The next prime is 51524563. The reversal of 51524540 is 4542515.

51524540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288094 + ... + 1288133.

It is an arithmetic number, because the mean of its divisors is an integer number (9016798).

Almost surely, 2^51524540 is an apocalyptic number.

It is an amenable number.

51524540 is an abundant number, since it is smaller than the sum of its proper divisors (56677036).

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

51524540 is a wasteful number, since it uses less digits than its factorization.

51524540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576236 (or 2576234 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 51524540 is about 7178.0596263893. The cubic root of 51524540 is about 372.1100283465.

The spelling of 51524540 in words is "fifty-one million, five hundred twenty-four thousand, five hundred forty".