53172687 has 16 divisors (see below), whose sum is σ = 72099072. Its totient is φ = 34852800.

The previous prime is 53172683. The next prime is 53172701. The reversal of 53172687 is 78627135.

It is not a de Polignac number, because 53172687 - 2² = 53172683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53172683) 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, 47923 + ... + 49019.

It is an arithmetic number, because the mean of its divisors is an integer number (4506192).

Almost surely, 2^53172687 is an apocalyptic number.

53172687 is a deficient number, since it is larger than the sum of its proper divisors (18926385).

53172687 is a wasteful number, since it uses less digits than its factorization.

53172687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358.

The product of its digits is 70560, while the sum is 39.

The square root of 53172687 is about 7291.9604359870. The cubic root of 53172687 is about 376.0360964855.

The spelling of 53172687 in words is "fifty-three million, one hundred seventy-two thousand, six hundred eighty-seven".