51113535 has 16 divisors (see below), whose sum is σ = 89216640. Its totient is φ = 24782240.

The previous prime is 51113533. The next prime is 51113549. The reversal of 51113535 is 53531115.

It is not a de Polignac number, because 51113535 - 2¹ = 51113533 is a prime.

It is a super-2 number, since 2×51113535² = 5225186920392450, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51113533) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 154725 + ... + 155054.

It is an arithmetic number, because the mean of its divisors is an integer number (5576040).

Almost surely, 2^51113535 is an apocalyptic number.

51113535 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51113535 is a deficient number, since it is larger than the sum of its proper divisors (38103105).

51113535 is a wasteful number, since it uses less digits than its factorization.

51113535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309798.

The product of its digits is 1125, while the sum is 24.

The square root of 51113535 is about 7149.3730494359. The cubic root of 51113535 is about 371.1179602768.

It can be divided in two parts, 5111 and 3535, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 51113535 in words is "fifty-one million, one hundred thirteen thousand, five hundred thirty-five".