51526989 has 8 divisors (see below), whose sum is σ = 76336320. Its totient is φ = 34351308.

The previous prime is 51526973. The next prime is 51527011. The reversal of 51526989 is 98962515.

51526989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51526989 - 2⁴ = 51526973 is a prime.

It is a super-2 number, since 2×51526989² = 5310061190812242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51526919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954177 + ... + 954230.

It is an arithmetic number, because the mean of its divisors is an integer number (9542040).

Almost surely, 2^51526989 is an apocalyptic number.

It is an amenable number.

51526989 is a deficient number, since it is larger than the sum of its proper divisors (24809331).

51526989 is a wasteful number, since it uses less digits than its factorization.

51526989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908416 (or 1908410 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 51526989 is about 7178.2302136390. The cubic root of 51526989 is about 372.1159238093.

The spelling of 51526989 in words is "fifty-one million, five hundred twenty-six thousand, nine hundred eighty-nine".