51125621151 has 8 divisors (see below), whose sum is σ = 74364539904. Its totient is φ = 30985224920.

The previous prime is 51125621147. The next prime is 51125621161. The reversal of 51125621151 is 15112652115.

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

It is a cyclic number.

It is not a de Polignac number, because 51125621151 - 2² = 51125621147 is a prime.

It is a super-2 number, since 2×51125621151² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125621161) 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, 774630591 + ... + 774630656.

It is an arithmetic number, because the mean of its divisors is an integer number (9295567488).

Almost surely, 2^51125621151 is an apocalyptic number.

51125621151 is a deficient number, since it is larger than the sum of its proper divisors (23238918753).

51125621151 is a wasteful number, since it uses less digits than its factorization.

51125621151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549261261.

The product of its digits is 3000, while the sum is 30.

It can be divided in two parts, 51125 and 621151, that added together give a palindrome (672276).

The spelling of 51125621151 in words is "fifty-one billion, one hundred twenty-five million, six hundred twenty-one thousand, one hundred fifty-one".