55418057 has 4 divisors (see below), whose sum is σ = 55785216. Its totient is φ = 55050900.

The previous prime is 55418053. The next prime is 55418071. The reversal of 55418057 is 75081455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55418057 - 2² = 55418053 is a prime.

It is a super-3 number, since 3×55418057³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55418053) 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, 183353 + ... + 183654.

It is an arithmetic number, because the mean of its divisors is an integer number (13946304).

Almost surely, 2^55418057 is an apocalyptic number.

It is an amenable number.

55418057 is a deficient number, since it is larger than the sum of its proper divisors (367159).

55418057 is a wasteful number, since it uses less digits than its factorization.

55418057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367158.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55418057 is about 7444.3305273208. The cubic root of 55418057 is about 381.2563610154.

The spelling of 55418057 in words is "fifty-five million, four hundred eighteen thousand, fifty-seven".