7215224503997 has 2 divisors, whose sum is σ = 7215224503998. Its totient is φ = 7215224503996.

The previous prime is 7215224503973. The next prime is 7215224504009. The reversal of 7215224503997 is 7993054225127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5686455467641 + 1528769036356 = 2384629^2 + 1236434^2 .

It is a cyclic number.

It is not a de Polignac number, because 7215224503997 - 2⁸ = 7215224503741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7215224503897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607612251998 + 3607612251999.

It is an arithmetic number, because the mean of its divisors is an integer number (3607612251999).

Almost surely, 2^{7215224503997} is an apocalyptic number.

It is an amenable number.

7215224503997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215224503997 is an equidigital number, since it uses as much as digits as its factorization.

7215224503997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 7215224503997 in words is "seven trillion, two hundred fifteen billion, two hundred twenty-four million, five hundred three thousand, nine hundred ninety-seven".