55323631 has 8 divisors (see below), whose sum is σ = 60480000. Its totient is φ = 50188440.

The previous prime is 55323617. The next prime is 55323641. The reversal of 55323631 is 13632355.

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 55323631 - 2¹⁷ = 55192559 is a prime.

It is a super-2 number, since 2×55323631² = 6121408294048322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55323631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55323641) 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, 450 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (7560000).

Almost surely, 2^55323631 is an apocalyptic number.

55323631 is a deficient number, since it is larger than the sum of its proper divisors (5156369).

55323631 is a wasteful number, since it uses less digits than its factorization.

55323631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10589.

The product of its digits is 8100, while the sum is 28.

The square root of 55323631 is about 7437.9856816211. The cubic root of 55323631 is about 381.0396989057.

Adding to 55323631 its reverse (13632355), we get a palindrome (68955986).

The spelling of 55323631 in words is "fifty-five million, three hundred twenty-three thousand, six hundred thirty-one".