55142768 has 20 divisors (see below), whose sum is σ = 107900088. Its totient is φ = 27297600.

The previous prime is 55142767. The next prime is 55142779. The reversal of 55142768 is 86724155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142761) 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, 15446 + ... + 18677.

Almost surely, 2^55142768 is an apocalyptic number.

It is an amenable number.

55142768 is a deficient number, since it is larger than the sum of its proper divisors (52757320).

55142768 is a wasteful number, since it uses less digits than its factorization.

55142768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34232 (or 34226 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 55142768 is about 7425.8176654157. The cubic root of 55142768 is about 380.6240162632.

The spelling of 55142768 in words is "fifty-five million, one hundred forty-two thousand, seven hundred sixty-eight".