51089039 has 4 divisors (see below), whose sum is σ = 52850760. Its totient is φ = 49327320.

The previous prime is 51089021. The next prime is 51089053. The reversal of 51089039 is 93098015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93098015 = 5 ⋅18619603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51089039 is a prime.

It is a super-2 number, since 2×51089039² = 5220179811887042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51089009) 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, 880817 + ... + 880874.

It is an arithmetic number, because the mean of its divisors is an integer number (13212690).

Almost surely, 2^51089039 is an apocalyptic number.

51089039 is a deficient number, since it is larger than the sum of its proper divisors (1761721).

51089039 is a wasteful number, since it uses less digits than its factorization.

51089039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761720.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 51089039 is about 7147.6596869185. The cubic root of 51089039 is about 371.0586651005.

The spelling of 51089039 in words is "fifty-one million, eighty-nine thousand, thirty-nine".