51520415552 has 28 divisors (see below), whose sum is σ = 102243733536. Its totient is φ = 25758215040.

The previous prime is 51520415539. The next prime is 51520415579. The reversal of 51520415552 is 25551402515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149923 + ... + 1193885.

It is an arithmetic number, because the mean of its divisors is an integer number (3651561912).

Almost surely, 2^51520415552 is an apocalyptic number.

It is an amenable number.

51520415552 is a deficient number, since it is larger than the sum of its proper divisors (50723317984).

51520415552 is a wasteful number, since it uses less digits than its factorization.

51520415552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62286 (or 62276 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 51520415552 in words is "fifty-one billion, five hundred twenty million, four hundred fifteen thousand, five hundred fifty-two".