55361857 has 8 divisors (see below), whose sum is σ = 56368640. Its totient is φ = 54362880.

The previous prime is 55361833. The next prime is 55361881. The reversal of 55361857 is 75816355.

It is an interprime number because it is at equal distance from previous prime (55361833) and next prime (55361881).

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 55361857 - 2¹⁹ = 54837569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55361807) 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, 13432 + ... + 17062.

It is an arithmetic number, because the mean of its divisors is an integer number (7046080).

Almost surely, 2^55361857 is an apocalyptic number.

It is an amenable number.

55361857 is a deficient number, since it is larger than the sum of its proper divisors (1006783).

55361857 is a wasteful number, since it uses less digits than its factorization.

55361857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903.

The product of its digits is 126000, while the sum is 40.

The square root of 55361857 is about 7440.5548852219. The cubic root of 55361857 is about 381.1274388090.

The spelling of 55361857 in words is "fifty-five million, three hundred sixty-one thousand, eight hundred fifty-seven".