53172129 has 8 divisors (see below), whose sum is σ = 71292960. Its totient is φ = 35249696.

The previous prime is 53172103. The next prime is 53172131. The reversal of 53172129 is 92127135.

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 53172129 - 2⁷ = 53172001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53172096 and 53172105.

It is not an unprimeable number, because it can be changed into a prime (53172139) 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, 48972 + ... + 50045.

It is an arithmetic number, because the mean of its divisors is an integer number (8911620).

Almost surely, 2^53172129 is an apocalyptic number.

It is an amenable number.

53172129 is a deficient number, since it is larger than the sum of its proper divisors (18120831).

53172129 is a wasteful number, since it uses less digits than its factorization.

53172129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99199.

The product of its digits is 3780, while the sum is 30.

The square root of 53172129 is about 7291.9221745710. The cubic root of 53172129 is about 376.0347810929.

It can be divided in two parts, 53172 and 129, that added together give a triangular number (53301 = T₃₂₆).

The spelling of 53172129 in words is "fifty-three million, one hundred seventy-two thousand, one hundred twenty-nine".