55145768 has 8 divisors (see below), whose sum is σ = 103398330. Its totient is φ = 27572880.

The previous prime is 55145729. The next prime is 55145801. The reversal of 55145768 is 86754155.

It can be written as a sum of positive squares in only one way, i.e., 53553124 + 1592644 = 7318^2 + 1262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×55145768³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3446603 + ... + 3446618.

Almost surely, 2^55145768 is an apocalyptic number.

It is an amenable number.

55145768 is a deficient number, since it is larger than the sum of its proper divisors (48252562).

55145768 is a wasteful number, since it uses less digits than its factorization.

55145768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6893227 (or 6893223 counting only the distinct ones).

The product of its digits is 168000, while the sum is 41.

The square root of 55145768 is about 7426.0196606257. The cubic root of 55145768 is about 380.6309186573.

The spelling of 55145768 in words is "fifty-five million, one hundred forty-five thousand, seven hundred sixty-eight".