55797911 has 8 divisors (see below), whose sum is σ = 60355680. Its totient is φ = 51278112.

The previous prime is 55797901. The next prime is 55797913. The reversal of 55797911 is 11979755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55797911 is a prime.

It is a super-2 number, since 2×55797911² = 6226813743927842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55797913) 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, 6395 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (7544460).

Almost surely, 2^55797911 is an apocalyptic number.

55797911 is a deficient number, since it is larger than the sum of its proper divisors (4557769).

55797911 is a wasteful number, since it uses less digits than its factorization.

55797911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18985.

The product of its digits is 99225, while the sum is 44.

The square root of 55797911 is about 7469.7999303864. The cubic root of 55797911 is about 382.1254647588.

The spelling of 55797911 in words is "fifty-five million, seven hundred ninety-seven thousand, nine hundred eleven".