51005201245554 has 32 divisors (see below), whose sum is σ = 103131101240640. Its totient is φ = 16815510695232.

The previous prime is 51005201245541. The next prime is 51005201245573. The reversal of 51005201245554 is 45554210250015.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69644344 + ... + 70372899.

It is an arithmetic number, because the mean of its divisors is an integer number (3222846913770).

Almost surely, 2^{51005201245554} is an apocalyptic number.

51005201245554 is an abundant number, since it is smaller than the sum of its proper divisors (52125899995086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51005201245554 is a wasteful number, since it uses less digits than its factorization.

51005201245554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140017914.

The product of its (nonzero) digits is 200000, while the sum is 39.

Adding to 51005201245554 its reverse (45554210250015), we get a palindrome (96559411495569).

The spelling of 51005201245554 in words is "fifty-one trillion, five billion, two hundred one million, two hundred forty-five thousand, five hundred fifty-four".