51222874477 has 8 divisors (see below), whose sum is σ = 54692979264. Its totient is φ = 47856355008.

The previous prime is 51222874453. The next prime is 51222874517. The reversal of 51222874477 is 77447822215.

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

It is a cyclic number.

It is not a de Polignac number, because 51222874477 - 2²³ = 51214485869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51222874477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222874177) 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, 25895308 + ... + 25897285.

It is an arithmetic number, because the mean of its divisors is an integer number (6836622408).

Almost surely, 2^51222874477 is an apocalyptic number.

It is an amenable number.

51222874477 is a deficient number, since it is larger than the sum of its proper divisors (3470104787).

51222874477 is a wasteful number, since it uses less digits than its factorization.

51222874477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51792659.

The product of its digits is 1756160, while the sum is 49.

The spelling of 51222874477 in words is "fifty-one billion, two hundred twenty-two million, eight hundred seventy-four thousand, four hundred seventy-seven".