51010051557 has 8 divisors (see below), whose sum is σ = 68673726784. Its totient is φ = 33676538688.

The previous prime is 51010051553. The next prime is 51010051571. The reversal of 51010051557 is 75515001015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51010051557 - 2² = 51010051553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51010051553) 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, 82540228 + ... + 82540845.

It is an arithmetic number, because the mean of its divisors is an integer number (8584215848).

Almost surely, 2^51010051557 is an apocalyptic number.

It is an amenable number.

51010051557 is a deficient number, since it is larger than the sum of its proper divisors (17663675227).

51010051557 is a wasteful number, since it uses less digits than its factorization.

51010051557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165081179.

The product of its (nonzero) digits is 4375, while the sum is 30.

The spelling of 51010051557 in words is "fifty-one billion, ten million, fifty-one thousand, five hundred fifty-seven".