51523245400 has 96 divisors (see below), whose sum is σ = 131225284080. Its totient is φ = 18657792000.

The previous prime is 51523245379. The next prime is 51523245401. The reversal of 51523245400 is 454232515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51523245401) 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, 481612 + ... + 578788.

Almost surely, 2^51523245400 is an apocalyptic number.

51523245400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51523245400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65612642040).

51523245400 is an abundant number, since it is smaller than the sum of its proper divisors (79702038680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51523245400 is a wasteful number, since it uses less digits than its factorization.

51523245400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97445 (or 97436 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 51523245400 its reverse (454232515), we get a palindrome (51977477915).

The spelling of 51523245400 in words is "fifty-one billion, five hundred twenty-three million, two hundred forty-five thousand, four hundred".