51445230531 has 16 divisors (see below), whose sum is σ = 71374846464. Its totient is φ = 32933754464.

The previous prime is 51445230521. The next prime is 51445230581. The reversal of 51445230531 is 13503254415.

It is a cyclic number.

It is not a de Polignac number, because 51445230531 - 2¹⁵ = 51445197763 is a prime.

It is a super-2 number, since 2×51445230531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51445230492 and 51445230501.

It is not an unprimeable number, because it can be changed into a prime (51445230521) 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, 3434601 + ... + 3449546.

It is an arithmetic number, because the mean of its divisors is an integer number (4460927904).

Almost surely, 2^51445230531 is an apocalyptic number.

51445230531 is a deficient number, since it is larger than the sum of its proper divisors (19929615933).

51445230531 is a wasteful number, since it uses less digits than its factorization.

51445230531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884250.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 51445230531 its reverse (13503254415), we get a palindrome (64948484946).

The spelling of 51445230531 in words is "fifty-one billion, four hundred forty-five million, two hundred thirty thousand, five hundred thirty-one".