54581575129 has 9 divisors (see below), whose sum is σ = 54831996831. Its totient is φ = 54332295120.

The previous prime is 54581575099. The next prime is 54581575189. The reversal of 54581575129 is 92157518545.

The square root of 54581575129 is 233627.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 143352729 + 54438222400 = 11973^2 + 233320^2 .

It is not a de Polignac number, because 54581575129 - 2⁷ = 54581575001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54581575189) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71723109 + ... + 71723869.

Almost surely, 2^54581575129 is an apocalyptic number.

54581575129 is the 233627-th square number.

54581575129 is the 116814-th centered octagonal number.

It is an amenable number.

54581575129 is a deficient number, since it is larger than the sum of its proper divisors (250421702).

54581575129 is an frugal number, since it uses more digits than its factorization.

54581575129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 1068 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 52.

It can be divided in two parts, 545815 and 75129, that added together give a square (620944 = 788²).

The spelling of 54581575129 in words is "fifty-four billion, five hundred eighty-one million, five hundred seventy-five thousand, one hundred twenty-nine".