72205351 has 2 divisors, whose sum is σ = 72205352. Its totient is φ = 72205350.

The previous prime is 72205337. The next prime is 72205381. The reversal of 72205351 is 15350227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72205351 - 2⁵ = 72205319 is a prime.

It is a super-2 number, since 2×72205351² = 10427225426066402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72205381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36102675 + 36102676.

It is an arithmetic number, because the mean of its divisors is an integer number (36102676).

Almost surely, 2^72205351 is an apocalyptic number.

72205351 is a deficient number, since it is larger than the sum of its proper divisors (1).

72205351 is an equidigital number, since it uses as much as digits as its factorization.

72205351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 72205351 is about 8497.3731823429. The cubic root of 72205351 is about 416.4118959500.

Adding to 72205351 its reverse (15350227), we get a palindrome (87555578).

The spelling of 72205351 in words is "seventy-two million, two hundred five thousand, three hundred fifty-one".