55212720253072 has 20 divisors (see below), whose sum is σ = 106977892397436. Its totient is φ = 27605522215040.

The previous prime is 55212720253069. The next prime is 55212720253133. The reversal of 55212720253072 is 27035202721255.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25601535561616 + 29611184691456 = 5059796^2 + 5441616^2 .

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, 51825679 + ... + 52880302.

Almost surely, 2^{55212720253072} is an apocalyptic number.

It is an amenable number.

55212720253072 is a deficient number, since it is larger than the sum of its proper divisors (51765172144364).

55212720253072 is a wasteful number, since it uses less digits than its factorization.

55212720253072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104738946 (or 104738940 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 55212720253072 in words is "fifty-five trillion, two hundred twelve billion, seven hundred twenty million, two hundred fifty-three thousand, seventy-two".