7221157052551 has 8 divisors (see below), whose sum is σ = 7778965342064. Its totient is φ = 6663682287360.

The previous prime is 7221157052537. The next prime is 7221157052561. The reversal of 7221157052551 is 1552507511227.

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 7221157052551 - 2²⁵ = 7221123498119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7221157052498 and 7221157052507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221157052561) 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, 83336106 + ... + 83422711.

It is an arithmetic number, because the mean of its divisors is an integer number (972370667758).

Almost surely, 2^{7221157052551} is an apocalyptic number.

7221157052551 is a deficient number, since it is larger than the sum of its proper divisors (557808289513).

7221157052551 is a wasteful number, since it uses less digits than its factorization.

7221157052551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166762161.

The product of its (nonzero) digits is 245000, while the sum is 43.

The spelling of 7221157052551 in words is "seven trillion, two hundred twenty-one billion, one hundred fifty-seven million, fifty-two thousand, five hundred fifty-one".