51989037 has 8 divisors (see below), whose sum is σ = 69433536. Its totient is φ = 34601952.

The previous prime is 51989029. The next prime is 51989059. The reversal of 51989037 is 73098915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51989037 - 2³ = 51989029 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 51989037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51989017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12193 + ... + 15894.

It is an arithmetic number, because the mean of its divisors is an integer number (8679192).

Almost surely, 2^51989037 is an apocalyptic number.

It is an amenable number.

51989037 is a deficient number, since it is larger than the sum of its proper divisors (17444499).

51989037 is a wasteful number, since it uses less digits than its factorization.

51989037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28707.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 51989037 is about 7210.3423635775. The cubic root of 51989037 is about 373.2248833767.

The spelling of 51989037 in words is "fifty-one million, nine hundred eighty-nine thousand, thirty-seven".