55507142 has 16 divisors (see below), whose sum is σ = 91992672. Its totient is φ = 24984960.

The previous prime is 55507139. The next prime is 55507157. The reversal of 55507142 is 24170555.

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, 34709 + ... + 36272.

It is an arithmetic number, because the mean of its divisors is an integer number (5749542).

Almost surely, 2^55507142 is an apocalyptic number.

55507142 is a deficient number, since it is larger than the sum of its proper divisors (36485530).

55507142 is a wasteful number, since it uses less digits than its factorization.

55507142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71023.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55507142 is about 7450.3115371104. The cubic root of 55507142 is about 381.4605425989.

Adding to 55507142 its reverse (24170555), we get a palindrome (79677697).

The spelling of 55507142 in words is "fifty-five million, five hundred seven thousand, one hundred forty-two".