53555831 has 16 divisors (see below), whose sum is σ = 65021760. Its totient is φ = 43061760.

The previous prime is 53555819. The next prime is 53555861. The reversal of 53555831 is 13855535.

It is not a de Polignac number, because 53555831 - 2⁶ = 53555767 is a prime.

It is a super-2 number, since 2×53555831² = 5736454068201122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53555791 and 53555800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53555861) 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, 49565 + ... + 50633.

It is an arithmetic number, because the mean of its divisors is an integer number (4063860).

Almost surely, 2^53555831 is an apocalyptic number.

53555831 is a deficient number, since it is larger than the sum of its proper divisors (11465929).

53555831 is a wasteful number, since it uses less digits than its factorization.

53555831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514.

The product of its digits is 45000, while the sum is 35.

The square root of 53555831 is about 7318.1849525685. The cubic root of 53555831 is about 376.9371311273.

The spelling of 53555831 in words is "fifty-three million, five hundred fifty-five thousand, eight hundred thirty-one".