51554020531 has 32 divisors (see below), whose sum is σ = 59737124160. Its totient is φ = 44065714176.

The previous prime is 51554020517. The next prime is 51554020537. The reversal of 51554020531 is 13502045515.

51554020531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51554020531 - 2⁹ = 51554020019 is a prime.

It is a super-2 number, since 2×51554020531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51554020493 and 51554020502.

It is not an unprimeable number, because it can be changed into a prime (51554020537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15827055 + ... + 15830311.

It is an arithmetic number, because the mean of its divisors is an integer number (1866785130).

Almost surely, 2^51554020531 is an apocalyptic number.

51554020531 is a deficient number, since it is larger than the sum of its proper divisors (8183103629).

51554020531 is a wasteful number, since it uses less digits than its factorization.

51554020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 51554020531 in words is "fifty-one billion, five hundred fifty-four million, twenty thousand, five hundred thirty-one".