51498069 has 24 divisors (see below), whose sum is σ = 80985600. Its totient is φ = 29018304.

The previous prime is 51498067. The next prime is 51498071. The reversal of 51498069 is 96089415.

It is an interprime number because it is at equal distance from previous prime (51498067) and next prime (51498071).

It is not a de Polignac number, because 51498069 - 2¹ = 51498067 is a prime.

It is a super-2 number, since 2×51498069² = 5304102221457522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51498069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51498061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8332 + ... + 13130.

It is an arithmetic number, because the mean of its divisors is an integer number (3374400).

Almost surely, 2^51498069 is an apocalyptic number.

It is an amenable number.

51498069 is a deficient number, since it is larger than the sum of its proper divisors (29487531).

51498069 is a wasteful number, since it uses less digits than its factorization.

51498069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889 (or 4882 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 51498069 is about 7176.2155067974. The cubic root of 51498069 is about 372.0462929440.

The spelling of 51498069 in words is "fifty-one million, four hundred ninety-eight thousand, sixty-nine".