51227607500 has 30 divisors (see below), whose sum is σ = 112024537548. Its totient is φ = 20491042000.

The previous prime is 51227607491. The next prime is 51227607503. The reversal of 51227607500 is 570672215.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51227607503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10243022 + ... + 10248021.

Almost surely, 2^51227607500 is an apocalyptic number.

51227607500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51227607500 is an abundant number, since it is smaller than the sum of its proper divisors (60796930048).

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

51227607500 is a wasteful number, since it uses less digits than its factorization.

51227607500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20491067 (or 20491050 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 51227607500 in words is "fifty-one billion, two hundred twenty-seven million, six hundred seven thousand, five hundred".