501157025131 has 16 divisors (see below), whose sum is σ = 599329347264. Its totient is φ = 410067425664.

The previous prime is 501157025107. The next prime is 501157025137. The reversal of 501157025131 is 131520751105.

It is a cyclic number.

It is not a de Polignac number, because 501157025131 - 2⁵ = 501157025099 is a prime.

It is a super-2 number, since 2×501157025131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501157025093 and 501157025102.

It is not an unprimeable number, because it can be changed into a prime (501157025137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18240700 + ... + 18268153.

It is an arithmetic number, because the mean of its divisors is an integer number (37458084204).

Almost surely, 2^501157025131 is an apocalyptic number.

501157025131 is a deficient number, since it is larger than the sum of its proper divisors (98172322133).

501157025131 is a wasteful number, since it uses less digits than its factorization.

501157025131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36508950.

The product of its (nonzero) digits is 5250, while the sum is 31.

Adding to 501157025131 its reverse (131520751105), we get a palindrome (632677776236).

The spelling of 501157025131 in words is "five hundred one billion, one hundred fifty-seven million, twenty-five thousand, one hundred thirty-one".