72474253 has 2 divisors, whose sum is σ = 72474254. Its totient is φ = 72474252.

The previous prime is 72474251. The next prime is 72474263. The reversal of 72474253 is 35247427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67864644 + 4609609 = 8238^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 72474253 - 2¹ = 72474251 is a prime.

Together with 72474251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72474251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36237126 + 36237127.

It is an arithmetic number, because the mean of its divisors is an integer number (36237127).

Almost surely, 2^72474253 is an apocalyptic number.

It is an amenable number.

72474253 is a deficient number, since it is larger than the sum of its proper divisors (1).

72474253 is an equidigital number, since it uses as much as digits as its factorization.

72474253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 34.

The square root of 72474253 is about 8513.1811328081. The cubic root of 72474253 is about 416.9281793701.

It can be divided in two parts, 72474 and 253, that added together give a palindrome (72727).

The spelling of 72474253 in words is "seventy-two million, four hundred seventy-four thousand, two hundred fifty-three".