55611699 has 16 divisors (see below), whose sum is σ = 87112704. Its totient is φ = 31111200.

The previous prime is 55611697. The next prime is 55611701. The reversal of 55611699 is 99611655.

It is an interprime number because it is at equal distance from previous prime (55611697) and next prime (55611701).

It is not a de Polignac number, because 55611699 - 2¹ = 55611697 is a prime.

It is a super-2 number, since 2×55611699² = 6185322131333202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55611699.

It is not an unprimeable number, because it can be changed into a prime (55611697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64387 + ... + 65244.

It is an arithmetic number, because the mean of its divisors is an integer number (5444544).

Almost surely, 2^55611699 is an apocalyptic number.

55611699 is a deficient number, since it is larger than the sum of its proper divisors (31501005).

55611699 is a wasteful number, since it uses less digits than its factorization.

55611699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129658.

The product of its digits is 72900, while the sum is 42.

The square root of 55611699 is about 7457.3251907101. The cubic root of 55611699 is about 381.6999073108.

It can be divided in two parts, 5561 and 1699, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 55611699 in words is "fifty-five million, six hundred eleven thousand, six hundred ninety-nine".