51898837 has 8 divisors (see below), whose sum is σ = 52709400. Its totient is φ = 51093504.

The previous prime is 51898811. The next prime is 51898871. The reversal of 51898837 is 73889815.

It can be written as a sum of positive squares in 4 ways, for example, as 3651921 + 48246916 = 1911^2 + 6946^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51898837 - 2¹⁹ = 51374549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51898037) 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, 21739 + ... + 24007.

It is an arithmetic number, because the mean of its divisors is an integer number (6588675).

Almost surely, 2^51898837 is an apocalyptic number.

It is an amenable number.

51898837 is a deficient number, since it is larger than the sum of its proper divisors (810563).

51898837 is a wasteful number, since it uses less digits than its factorization.

51898837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 483840, while the sum is 49.

The square root of 51898837 is about 7204.0847440879. The cubic root of 51898837 is about 373.0089123790.

The spelling of 51898837 in words is "fifty-one million, eight hundred ninety-eight thousand, eight hundred thirty-seven".