55770611 has 4 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 51480552.

The previous prime is 55770601. The next prime is 55770629. The reversal of 55770611 is 11607755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55770611 is a prime.

It is a super-2 number, since 2×55770611² = 6220722102626642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55770601) 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, 2145011 + ... + 2145036.

It is an arithmetic number, because the mean of its divisors is an integer number (15015168).

Almost surely, 2^55770611 is an apocalyptic number.

55770611 is a deficient number, since it is larger than the sum of its proper divisors (4290061).

55770611 is a wasteful number, since it uses less digits than its factorization.

55770611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290060.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 55770611 is about 7467.9723486365. The cubic root of 55770611 is about 382.0631343070.

The spelling of 55770611 in words is "fifty-five million, seven hundred seventy thousand, six hundred eleven".