55920534 has 32 divisors (see below), whose sum is σ = 118608000. Its totient is φ = 17527104.

The previous prime is 55920479. The next prime is 55920539. The reversal of 55920534 is 43502955.

It is a super-2 number, since 2×55920534² = 6254212245690312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55920495 and 55920504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55920539) 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, 14082 + ... + 17610.

It is an arithmetic number, because the mean of its divisors is an integer number (3706500).

Almost surely, 2^55920534 is an apocalyptic number.

55920534 is an abundant number, since it is smaller than the sum of its proper divisors (62687466).

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

55920534 is a wasteful number, since it uses less digits than its factorization.

55920534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 55920534 is about 7478.0033431391. The cubic root of 55920534 is about 382.4051830425.

The spelling of 55920534 in words is "fifty-five million, nine hundred twenty thousand, five hundred thirty-four".