51113039 has 4 divisors (see below), whose sum is σ = 51301920. Its totient is φ = 50924160.

The previous prime is 51113011. The next prime is 51113053. The reversal of 51113039 is 93031115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93031115 = 5 ⋅18606223.

It is a cyclic number.

It is not a de Polignac number, because 51113039 - 2¹² = 51108943 is a prime.

It is a super-2 number, since 2×51113039² = 5225085511631042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51113009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94034 + ... + 94575.

It is an arithmetic number, because the mean of its divisors is an integer number (12825480).

Almost surely, 2^51113039 is an apocalyptic number.

51113039 is a deficient number, since it is larger than the sum of its proper divisors (188881).

51113039 is a wasteful number, since it uses less digits than its factorization.

51113039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188880.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 51113039 is about 7149.3383609954. The cubic root of 51113039 is about 371.1167598439.

The spelling of 51113039 in words is "fifty-one million, one hundred thirteen thousand, thirty-nine".