69225551 has 2 divisors, whose sum is σ = 69225552. Its totient is φ = 69225550.

The previous prime is 69225521. The next prime is 69225553. The reversal of 69225551 is 15552296.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69225551 is a prime.

It is a super-2 number, since 2×69225551² = 9584353822507202, which contains 22 as substring.

Together with 69225553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69225553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34612775 + 34612776.

It is an arithmetic number, because the mean of its divisors is an integer number (34612776).

Almost surely, 2^69225551 is an apocalyptic number.

69225551 is a deficient number, since it is larger than the sum of its proper divisors (1).

69225551 is an equidigital number, since it uses as much as digits as its factorization.

69225551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 69225551 is about 8320.1893608259. The cubic root of 69225551 is about 410.6030210399.

The spelling of 69225551 in words is "sixty-nine million, two hundred twenty-five thousand, five hundred fifty-one".