51245052501 has 16 divisors (see below), whose sum is σ = 74028423744. Its totient is φ = 31405995264.

The previous prime is 51245052487. The next prime is 51245052511. The reversal of 51245052501 is 10525054215.

It is not a de Polignac number, because 51245052501 - 2¹¹ = 51245050453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245052511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11681586 + ... + 11685971.

It is an arithmetic number, because the mean of its divisors is an integer number (4626776484).

Almost surely, 2^51245052501 is an apocalyptic number.

51245052501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51245052501 is a deficient number, since it is larger than the sum of its proper divisors (22783371243).

51245052501 is a wasteful number, since it uses less digits than its factorization.

51245052501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367620.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 51245052501 in words is "fifty-one billion, two hundred forty-five million, fifty-two thousand, five hundred one".