55623534 has 32 divisors (see below), whose sum is σ = 113685120. Its totient is φ = 18138912.

The previous prime is 55623527. The next prime is 55623569. The reversal of 55623534 is 43532655.

It is a junction number, because it is equal to n+sod(n) for n = 55623495 and 55623504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71572 + ... + 72344.

It is an arithmetic number, because the mean of its divisors is an integer number (3552660).

Almost surely, 2^55623534 is an apocalyptic number.

55623534 is an abundant number, since it is smaller than the sum of its proper divisors (58061586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55623534 is a wasteful number, since it uses less digits than its factorization.

55623534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its digits is 54000, while the sum is 33.

The square root of 55623534 is about 7458.1186635773. The cubic root of 55623534 is about 381.7269825370.

It can be divided in two parts, 556 and 23534, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 55623534 in words is "fifty-five million, six hundred twenty-three thousand, five hundred thirty-four".