51113655 has 12 divisors (see below), whose sum is σ = 88597080. Its totient is φ = 27260592.

The previous prime is 51113639. The next prime is 51113663. The reversal of 51113655 is 55631115.

51113655 is a `hidden beast` number, since 5 + 1 + 1 + 1 + 3 + 655 = 666.

It is not a de Polignac number, because 51113655 - 2⁴ = 51113639 is a prime.

It is a super-2 number, since 2×51113655² = 5225211454918050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567885 + ... + 567974.

It is an arithmetic number, because the mean of its divisors is an integer number (7383090).

Almost surely, 2^51113655 is an apocalyptic number.

51113655 is a deficient number, since it is larger than the sum of its proper divisors (37483425).

51113655 is a wasteful number, since it uses less digits than its factorization.

51113655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135870 (or 1135867 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 51113655 is about 7149.3814417752. The cubic root of 51113655 is about 371.1182507029.

The spelling of 51113655 in words is "fifty-one million, one hundred thirteen thousand, six hundred fifty-five".