55451351020422 has 16 divisors (see below), whose sum is σ = 126745945189632. Its totient is φ = 15843243148680.

The previous prime is 55451351020399. The next prime is 55451351020447. The reversal of 55451351020422 is 22402015315455.

It is a super-2 number, since 2×55451351020422² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660135131154 + ... + 660135131237.

It is an arithmetic number, because the mean of its divisors is an integer number (7921621574352).

Almost surely, 2^{55451351020422} is an apocalyptic number.

55451351020422 is an abundant number, since it is smaller than the sum of its proper divisors (71294594169210).

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

55451351020422 is a wasteful number, since it uses less digits than its factorization.

55451351020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320270262403.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 55451351020422 its reverse (22402015315455), we get a palindrome (77853366335877).

The spelling of 55451351020422 in words is "fifty-five trillion, four hundred fifty-one billion, three hundred fifty-one million, twenty thousand, four hundred twenty-two".