55917611 has 4 divisors (see below), whose sum is σ = 55948224. Its totient is φ = 55887000.

The previous prime is 55917599. The next prime is 55917613. The reversal of 55917611 is 11671955.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11671955 = 5 ⋅2334391.

It is a cyclic number.

It is not a de Polignac number, because 55917611 - 2¹⁴ = 55901227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55917613) 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, 12380 + ... + 16281.

It is an arithmetic number, because the mean of its divisors is an integer number (13987056).

Almost surely, 2^55917611 is an apocalyptic number.

55917611 is a deficient number, since it is larger than the sum of its proper divisors (30613).

55917611 is a wasteful number, since it uses less digits than its factorization.

55917611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30612.

The product of its digits is 9450, while the sum is 35.

The square root of 55917611 is about 7477.8079007153. The cubic root of 55917611 is about 382.3985200766.

The spelling of 55917611 in words is "fifty-five million, nine hundred seventeen thousand, six hundred eleven".