53555631 has 8 divisors (see below), whose sum is σ = 73711104. Its totient is φ = 34551960.

The previous prime is 53555617. The next prime is 53555639. The reversal of 53555631 is 13655535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53555631 - 2⁷ = 53555503 is a prime.

It is a super-2 number, since 2×53555631² = 5736411223616322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53555592 and 53555601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53555639) 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, 287841 + ... + 288026.

It is an arithmetic number, because the mean of its divisors is an integer number (9213888).

Almost surely, 2^53555631 is an apocalyptic number.

53555631 is a deficient number, since it is larger than the sum of its proper divisors (20155473).

53555631 is a wasteful number, since it uses less digits than its factorization.

53555631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575901.

The product of its digits is 33750, while the sum is 33.

The square root of 53555631 is about 7318.1712879653. The cubic root of 53555631 is about 376.9366619128.

The spelling of 53555631 in words is "fifty-three million, five hundred fifty-five thousand, six hundred thirty-one".