55210942 has 4 divisors (see below), whose sum is σ = 82816416. Its totient is φ = 27605470.

The previous prime is 55210937. The next prime is 55210957. The reversal of 55210942 is 24901255.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55210942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13802734 + ... + 13802737.

It is an arithmetic number, because the mean of its divisors is an integer number (20704104).

Almost surely, 2^55210942 is an apocalyptic number.

55210942 is a deficient number, since it is larger than the sum of its proper divisors (27605474).

55210942 is a wasteful number, since it uses less digits than its factorization.

55210942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27605473.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55210942 is about 7430.4065837611. The cubic root of 55210942 is about 380.7808091143.

The spelling of 55210942 in words is "fifty-five million, two hundred ten thousand, nine hundred forty-two".