51485810554 has 8 divisors (see below), whose sum is σ = 77320766880. Its totient is φ = 25712221596.

The previous prime is 51485810527. The next prime is 51485810573. The reversal of 51485810554 is 45501858415.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15339744 + ... + 15343099.

It is an arithmetic number, because the mean of its divisors is an integer number (9665095860).

Almost surely, 2^51485810554 is an apocalyptic number.

51485810554 is a deficient number, since it is larger than the sum of its proper divisors (25834956326).

51485810554 is a wasteful number, since it uses less digits than its factorization.

51485810554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30683684.

The product of its (nonzero) digits is 640000, while the sum is 46.

The spelling of 51485810554 in words is "fifty-one billion, four hundred eighty-five million, eight hundred ten thousand, five hundred fifty-four".