7449222551 has 2 divisors, whose sum is σ = 7449222552. Its totient is φ = 7449222550.

The previous prime is 7449222457. The next prime is 7449222563. The reversal of 7449222551 is 1552229447.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7449222551 is a prime.

It is a super-2 number, since 2×7449222551² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 7449222499 and 7449222508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7449222581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3724611275 + 3724611276.

It is an arithmetic number, because the mean of its divisors is an integer number (3724611276).

Almost surely, 2^7449222551 is an apocalyptic number.

7449222551 is a deficient number, since it is larger than the sum of its proper divisors (1).

7449222551 is an equidigital number, since it uses as much as digits as its factorization.

7449222551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 7449222551 is about 86308.8787495238. The cubic root of 7449222551 is about 1953.0063249257.

The spelling of 7449222551 in words is "seven billion, four hundred forty-nine million, two hundred twenty-two thousand, five hundred fifty-one".