51490712 has 32 divisors (see below), whose sum is σ = 118826400. Its totient is φ = 20369664.

The previous prime is 51490697. The next prime is 51490723. The reversal of 51490712 is 21709415.

51490712 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 7 ways as a sum of consecutive naturals, for example, 34637 + ... + 36092.

It is an arithmetic number, because the mean of its divisors is an integer number (3713325).

Almost surely, 2^51490712 is an apocalyptic number.

51490712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51490712 is an abundant number, since it is smaller than the sum of its proper divisors (67335688).

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

51490712 is a wasteful number, since it uses less digits than its factorization.

51490712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70755 (or 70751 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 51490712 is about 7175.7028924002. The cubic root of 51490712 is about 372.0285752898.

The spelling of 51490712 in words is "fifty-one million, four hundred ninety thousand, seven hundred twelve".