55142502 has 16 divisors (see below), whose sum is σ = 110841600. Its totient is φ = 18288072.

The previous prime is 55142497. The next prime is 55142519. The reversal of 55142502 is 20524155.

It is a happy number.

It is a congruent number.

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, 21898 + ... + 24285.

It is an arithmetic number, because the mean of its divisors is an integer number (6927600).

Almost surely, 2^55142502 is an apocalyptic number.

55142502 is an abundant number, since it is smaller than the sum of its proper divisors (55699098).

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

55142502 is a wasteful number, since it uses less digits than its factorization.

55142502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46387.

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

The square root of 55142502 is about 7425.7997549086. The cubic root of 55142502 is about 380.6234042389.

Adding to 55142502 its reverse (20524155), we get a palindrome (75666657).

The spelling of 55142502 in words is "fifty-five million, one hundred forty-two thousand, five hundred two".