55115057 has 4 divisors (see below), whose sum is σ = 55234560. Its totient is φ = 54995556.

The previous prime is 55115041. The next prime is 55115063. The reversal of 55115057 is 75051155.

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 55115057 - 2⁴ = 55115041 is a prime.

It is a super-2 number, since 2×55115057² = 6075339016226498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55115017) 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, 59057 + ... + 59982.

It is an arithmetic number, because the mean of its divisors is an integer number (13808640).

Almost surely, 2^55115057 is an apocalyptic number.

It is an amenable number.

55115057 is a deficient number, since it is larger than the sum of its proper divisors (119503).

55115057 is a wasteful number, since it uses less digits than its factorization.

55115057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119502.

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 55115057 is about 7423.9515758119. The cubic root of 55115057 is about 380.5602470099.

The spelling of 55115057 in words is "fifty-five million, one hundred fifteen thousand, fifty-seven".