55193760 has 72 divisors (see below), whose sum is σ = 188353620. Its totient is φ = 14717952.

The previous prime is 55193753. The next prime is 55193771. The reversal of 55193760 is 6739155.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54819216 + 374544 = 7404^2 + 612^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×55193760² = 6092702285875200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17725 + ... + 20604.

Almost surely, 2^55193760 is an apocalyptic number.

It is an amenable number.

55193760 is an abundant number, since it is smaller than the sum of its proper divisors (133159860).

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

55193760 is a wasteful number, since it uses less digits than its factorization.

55193760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38350 (or 38339 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 55193760 is about 7429.2502986506. The cubic root of 55193760 is about 380.7413045376.

The spelling of 55193760 in words is "fifty-five million, one hundred ninety-three thousand, seven hundred sixty".