51500535541 has 16 divisors (see below), whose sum is σ = 63450261504. Its totient is φ = 40705899264.

The previous prime is 51500535517. The next prime is 51500535589. The reversal of 51500535541 is 14553500515.

It is a cyclic number.

It is not a de Polignac number, because 51500535541 - 2⁵ = 51500535509 is a prime.

It is a super-2 number, since 2×51500535541² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51500535497 and 51500535506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500538541) 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, 200725 + ... + 378538.

It is an arithmetic number, because the mean of its divisors is an integer number (3965641344).

Almost surely, 2^51500535541 is an apocalyptic number.

It is an amenable number.

51500535541 is a deficient number, since it is larger than the sum of its proper divisors (11949725963).

51500535541 is a wasteful number, since it uses less digits than its factorization.

51500535541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580260.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 51500535541 in words is "fifty-one billion, five hundred million, five hundred thirty-five thousand, five hundred forty-one".