51523023 has 8 divisors (see below), whose sum is σ = 70913536. Its totient is φ = 33240600.

The previous prime is 51523009. The next prime is 51523027. The reversal of 51523023 is 32032515.

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

It is not a de Polignac number, because 51523023 - 2⁶ = 51522959 is a prime.

It is a super-4 number, since 4×51523023⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51523027) 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, 276913 + ... + 277098.

It is an arithmetic number, because the mean of its divisors is an integer number (8864192).

Almost surely, 2^51523023 is an apocalyptic number.

51523023 is a deficient number, since it is larger than the sum of its proper divisors (19390513).

51523023 is a wasteful number, since it uses less digits than its factorization.

51523023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554045.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51523023 is about 7177.9539563862. The cubic root of 51523023 is about 372.1063763880.

Adding to 51523023 its reverse (32032515), we get a palindrome (83555538).

The spelling of 51523023 in words is "fifty-one million, five hundred twenty-three thousand, twenty-three".