55125042 has 64 divisors (see below), whose sum is σ = 136289280. Its totient is φ = 14510016.

The previous prime is 55125017. The next prime is 55125053. The reversal of 55125042 is 24052155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28593 + ... + 30459.

It is an arithmetic number, because the mean of its divisors is an integer number (2129520).

Almost surely, 2^55125042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55125042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68144640).

55125042 is an abundant number, since it is smaller than the sum of its proper divisors (81164238).

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

55125042 is a wasteful number, since it uses less digits than its factorization.

55125042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55125042 is about 7424.6240308853. The cubic root of 55125042 is about 380.5832272070.

Adding to 55125042 its reverse (24052155), we get a palindrome (79177197).

The spelling of 55125042 in words is "fifty-five million, one hundred twenty-five thousand, forty-two".