55522154211520 has 224 divisors, whose sum is σ = 135750728475648. Its totient is φ = 21618070290432.

The previous prime is 55522154211451. The next prime is 55522154211529. The reversal of 55522154211520 is 2511245122555.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (55522154211529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14897275897 + ... + 14897279623.

Almost surely, 2^{55522154211520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55522154211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67875364237824).

55522154211520 is an abundant number, since it is smaller than the sum of its proper divisors (80228574264128).

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

55522154211520 is a wasteful number, since it uses less digits than its factorization.

55522154211520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207 (or 7197 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 55522154211520 in words is "fifty-five trillion, five hundred twenty-two billion, one hundred fifty-four million, two hundred eleven thousand, five hundred twenty".