51220504276 has 24 divisors (see below), whose sum is σ = 91042479360. Its totient is φ = 25210903872.

The previous prime is 51220504273. The next prime is 51220504367. The reversal of 51220504276 is 67240502215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51220504271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236100 + ... + 397723.

It is an arithmetic number, because the mean of its divisors is an integer number (3793436640).

Almost surely, 2^51220504276 is an apocalyptic number.

It is an amenable number.

51220504276 is a deficient number, since it is larger than the sum of its proper divisors (39821975084).

51220504276 is a wasteful number, since it uses less digits than its factorization.

51220504276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634143 (or 634141 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 51220504276 in words is "fifty-one billion, two hundred twenty million, five hundred four thousand, two hundred seventy-six".