51520541451 has 8 divisors (see below), whose sum is σ = 70155631104. Its totient is φ = 33616239720.

The previous prime is 51520541447. The next prime is 51520541467. The reversal of 51520541451 is 15414502515.

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 51520541451 - 2² = 51520541447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51520541251) 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, 182696815 + ... + 182697096.

It is an arithmetic number, because the mean of its divisors is an integer number (8769453888).

Almost surely, 2^51520541451 is an apocalyptic number.

51520541451 is a deficient number, since it is larger than the sum of its proper divisors (18635089653).

51520541451 is a wasteful number, since it uses less digits than its factorization.

51520541451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365393961.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 51520541451 in words is "fifty-one billion, five hundred twenty million, five hundred forty-one thousand, four hundred fifty-one".