51555145352541 has 16 divisors (see below), whose sum is σ = 72785846101248. Its totient is φ = 32347388057600.

The previous prime is 51555145352533. The next prime is 51555145352617. The reversal of 51555145352541 is 14525354155515.

It is not a de Polignac number, because 51555145352541 - 2³ = 51555145352533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555145352441) 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, 12885780 + ... + 16405901.

It is an arithmetic number, because the mean of its divisors is an integer number (4549115381328).

Almost surely, 2^{51555145352541} is an apocalyptic number.

51555145352541 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51555145352541 is a deficient number, since it is larger than the sum of its proper divisors (21230700748707).

51555145352541 is a wasteful number, since it uses less digits than its factorization.

51555145352541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29326212.

The product of its digits is 7500000, while the sum is 51.

The spelling of 51555145352541 in words is "fifty-one trillion, five hundred fifty-five billion, one hundred forty-five million, three hundred fifty-two thousand, five hundred forty-one".