55755623 has 8 divisors (see below), whose sum is σ = 69513600. Its totient is φ = 43445880.

The previous prime is 55755619. The next prime is 55755641. The reversal of 55755623 is 32655755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55755623 - 2² = 55755619 is a prime.

It is a super-2 number, since 2×55755623² = 6217378992236258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55755643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361973 + ... + 362126.

It is an arithmetic number, because the mean of its divisors is an integer number (8689200).

Almost surely, 2^55755623 is an apocalyptic number.

55755623 is a deficient number, since it is larger than the sum of its proper divisors (13757977).

55755623 is a wasteful number, since it uses less digits than its factorization.

55755623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724117.

The product of its digits is 157500, while the sum is 38.

The square root of 55755623 is about 7466.9687959707. The cubic root of 55755623 is about 382.0289055546.

The spelling of 55755623 in words is "fifty-five million, seven hundred fifty-five thousand, six hundred twenty-three".