51113758 has 4 divisors (see below), whose sum is σ = 76670640. Its totient is φ = 25556878.

The previous prime is 51113737. The next prime is 51113759. The reversal of 51113758 is 85731115.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×51113758² = 5225232513765128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51113759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12778438 + ... + 12778441.

It is an arithmetic number, because the mean of its divisors is an integer number (19167660).

Almost surely, 2^51113758 is an apocalyptic number.

51113758 is a deficient number, since it is larger than the sum of its proper divisors (25556882).

51113758 is a wasteful number, since it uses less digits than its factorization.

51113758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25556881.

The product of its digits is 4200, while the sum is 31.

The square root of 51113758 is about 7149.3886451920. The cubic root of 51113758 is about 371.1184999850.

The spelling of 51113758 in words is "fifty-one million, one hundred thirteen thousand, seven hundred fifty-eight".