55054631 has 4 divisors (see below), whose sum is σ = 56542632. Its totient is φ = 53566632.

The previous prime is 55054621. The next prime is 55054639. The reversal of 55054631 is 13645055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55054631 is a prime.

It is a super-2 number, since 2×55054631² = 6062024789092322, 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 = 55054594 and 55054603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55054639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743945 + ... + 744018.

It is an arithmetic number, because the mean of its divisors is an integer number (14135658).

Almost surely, 2^55054631 is an apocalyptic number.

55054631 is a deficient number, since it is larger than the sum of its proper divisors (1488001).

55054631 is a wasteful number, since it uses less digits than its factorization.

55054631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488000.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55054631 is about 7419.8807941907. The cubic root of 55054631 is about 380.4211190128.

Adding to 55054631 its reverse (13645055), we get a palindrome (68699686).

The spelling of 55054631 in words is "fifty-five million, fifty-four thousand, six hundred thirty-one".