51342325501 has 4 divisors (see below), whose sum is σ = 51360387552. Its totient is φ = 51324263452.

The previous prime is 51342325499. The next prime is 51342325511. The reversal of 51342325501 is 10552324315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51342325501 - 2¹ = 51342325499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342325511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9026761 + ... + 9032446.

It is an arithmetic number, because the mean of its divisors is an integer number (12840096888).

Almost surely, 2^51342325501 is an apocalyptic number.

It is an amenable number.

51342325501 is a deficient number, since it is larger than the sum of its proper divisors (18062051).

51342325501 is a wasteful number, since it uses less digits than its factorization.

51342325501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18062050.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 51342325501 its reverse (10552324315), we get a palindrome (61894649816).

The spelling of 51342325501 in words is "fifty-one billion, three hundred forty-two million, three hundred twenty-five thousand, five hundred one".