55212486 has 32 divisors (see below), whose sum is σ = 129282048. Its totient is φ = 15389760.

The previous prime is 55212467. The next prime is 55212523. The reversal of 55212486 is 68421255.

It is a super-2 number, since 2×55212486² = 6096837220600392, which contains 22 as substring.

It is a Curzon number.

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, 14310 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (4040064).

Almost surely, 2^55212486 is an apocalyptic number.

55212486 is an abundant number, since it is smaller than the sum of its proper divisors (74069562).

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

55212486 is a wasteful number, since it uses less digits than its factorization.

55212486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32116.

The product of its digits is 19200, while the sum is 33.

The square root of 55212486 is about 7430.5104804448. The cubic root of 55212486 is about 380.7843586527.

The spelling of 55212486 in words is "fifty-five million, two hundred twelve thousand, four hundred eighty-six".