53611899 has 8 divisors (see below), whose sum is σ = 77980992. Its totient is φ = 32492040.

The previous prime is 53611891. The next prime is 53611949. The reversal of 53611899 is 99811635.

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

It is not a de Polignac number, because 53611899 - 2³ = 53611891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53611899.

It is not an unprimeable number, because it can be changed into a prime (53611891) 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, 812269 + ... + 812334.

It is an arithmetic number, because the mean of its divisors is an integer number (9747624).

Almost surely, 2^53611899 is an apocalyptic number.

53611899 is a deficient number, since it is larger than the sum of its proper divisors (24369093).

53611899 is a wasteful number, since it uses less digits than its factorization.

53611899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624617.

The product of its digits is 58320, while the sum is 42.

The square root of 53611899 is about 7322.0146817662. The cubic root of 53611899 is about 377.0686246846.

It can be divided in two parts, 5361 and 1899, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 53611899 in words is "fifty-three million, six hundred eleven thousand, eight hundred ninety-nine".