55210992 has 20 divisors (see below), whose sum is σ = 142628520. Its totient is φ = 18403648.

The previous prime is 55210963. The next prime is 55210997. The reversal of 55210992 is 29901255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55210997) 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, 575067 + ... + 575162.

It is an arithmetic number, because the mean of its divisors is an integer number (7131426).

Almost surely, 2^55210992 is an apocalyptic number.

It is an amenable number.

55210992 is an abundant number, since it is smaller than the sum of its proper divisors (87417528).

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

55210992 is a wasteful number, since it uses less digits than its factorization.

55210992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150240 (or 1150234 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 55210992 is about 7430.4099483138. The cubic root of 55210992 is about 380.7809240615.

The spelling of 55210992 in words is "fifty-five million, two hundred ten thousand, nine hundred ninety-two".