51023489 has 8 divisors (see below), whose sum is σ = 57457920. Its totient is φ = 44888400.

The previous prime is 51023449. The next prime is 51023491. The reversal of 51023489 is 98432015.

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 51023489 - 2⁸ = 51023233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51023429) 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, 74474 + ... + 75155.

It is an arithmetic number, because the mean of its divisors is an integer number (7182240).

Almost surely, 2^51023489 is an apocalyptic number.

It is an amenable number.

51023489 is a deficient number, since it is larger than the sum of its proper divisors (6434431).

51023489 is a wasteful number, since it uses less digits than its factorization.

51023489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149671.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 51023489 is about 7143.0727981731. The cubic root of 51023489 is about 370.8999010686.

The spelling of 51023489 in words is "fifty-one million, twenty-three thousand, four hundred eighty-nine".