51113699 has 16 divisors (see below), whose sum is σ = 64942080. Its totient is φ = 39134880.

The previous prime is 51113693. The next prime is 51113707. The reversal of 51113699 is 99631115.

It is a cyclic number.

It is not a de Polignac number, because 51113699 - 2¹⁶ = 51048163 is a prime.

It is a super-2 number, since 2×51113699² = 5225220450925202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51113693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6239 + ... + 11880.

It is an arithmetic number, because the mean of its divisors is an integer number (4058880).

Almost surely, 2^51113699 is an apocalyptic number.

51113699 is a deficient number, since it is larger than the sum of its proper divisors (13828381).

51113699 is a wasteful number, since it uses less digits than its factorization.

51113699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18170.

The product of its digits is 7290, while the sum is 35.

The square root of 51113699 is about 7149.3845189639. The cubic root of 51113699 is about 371.1183571924.

The spelling of 51113699 in words is "fifty-one million, one hundred thirteen thousand, six hundred ninety-nine".