51520101455 has 4 divisors (see below), whose sum is σ = 61824121752. Its totient is φ = 41216081160.

The previous prime is 51520101439. The next prime is 51520101473. The reversal of 51520101455 is 55410102515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51520101455 - 2⁴ = 51520101439 is a prime.

It is a Duffinian number.

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, 5152010141 + ... + 5152010150.

It is an arithmetic number, because the mean of its divisors is an integer number (15456030438).

Almost surely, 2^51520101455 is an apocalyptic number.

51520101455 is a deficient number, since it is larger than the sum of its proper divisors (10304020297).

51520101455 is a wasteful number, since it uses less digits than its factorization.

51520101455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10304020296.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 51520101455 in words is "fifty-one billion, five hundred twenty million, one hundred one thousand, four hundred fifty-five".