55812538 has 16 divisors (see below), whose sum is σ = 90177120. Its totient is φ = 25821936.

The previous prime is 55812529. The next prime is 55812583. The reversal of 55812538 is 83521855.

It is a junction number, because it is equal to n+sod(n) for n = 55812497 and 55812506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15445 + ... + 18712.

It is an arithmetic number, because the mean of its divisors is an integer number (5636070).

Almost surely, 2^55812538 is an apocalyptic number.

55812538 is a deficient number, since it is larger than the sum of its proper divisors (34364582).

55812538 is a wasteful number, since it uses less digits than its factorization.

55812538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34221.

The product of its digits is 48000, while the sum is 37.

The square root of 55812538 is about 7470.7789419846. The cubic root of 55812538 is about 382.1588522742.

The spelling of 55812538 in words is "fifty-five million, eight hundred twelve thousand, five hundred thirty-eight".