51512351541 has 8 divisors (see below), whose sum is σ = 78495011904. Its totient is φ = 29435629440.

The previous prime is 51512351531. The next prime is 51512351549. The reversal of 51512351541 is 14515321515.

It is a happy number.

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

It is not a de Polignac number, because 51512351541 - 2⁷ = 51512351413 is a prime.

It is a super-2 number, since 2×51512351541² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512351549) 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, 1226484540 + ... + 1226484581.

It is an arithmetic number, because the mean of its divisors is an integer number (9811876488).

Almost surely, 2^51512351541 is an apocalyptic number.

It is an amenable number.

51512351541 is a deficient number, since it is larger than the sum of its proper divisors (26982660363).

51512351541 is a wasteful number, since it uses less digits than its factorization.

51512351541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452969131.

The product of its digits is 15000, while the sum is 33.

The spelling of 51512351541 in words is "fifty-one billion, five hundred twelve million, three hundred fifty-one thousand, five hundred forty-one".