51453009 has 8 divisors (see below), whose sum is σ = 76226720. Its totient is φ = 34301988.

The previous prime is 51452993. The next prime is 51453023. The reversal of 51453009 is 90035415.

It is not a de Polignac number, because 51453009 - 2⁴ = 51452993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1905667 = 51453009 / (5 + 1 + 4 + 5 + 3 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51453029) 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, 952807 + ... + 952860.

It is an arithmetic number, because the mean of its divisors is an integer number (9528340).

Almost surely, 2^51453009 is an apocalyptic number.

It is an amenable number.

51453009 is a deficient number, since it is larger than the sum of its proper divisors (24773711).

51453009 is a wasteful number, since it uses less digits than its factorization.

51453009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905676 (or 1905670 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51453009 is about 7173.0752819136. The cubic root of 51453009 is about 371.9377497293.

The spelling of 51453009 in words is "fifty-one million, four hundred fifty-three thousand, nine".