40702253 has 2 divisors, whose sum is σ = 40702254. Its totient is φ = 40702252.

The previous prime is 40702247. The next prime is 40702307. The reversal of 40702253 is 35220704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31326409 + 9375844 = 5597^2 + 3062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40702253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40702243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20351126 + 20351127.

It is an arithmetic number, because the mean of its divisors is an integer number (20351127).

Almost surely, 2^40702253 is an apocalyptic number.

It is an amenable number.

40702253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40702253 is an equidigital number, since it uses as much as digits as its factorization.

40702253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 40702253 is about 6379.8317375931. The cubic root of 40702253 is about 343.9849827814.

Adding to 40702253 its reverse (35220704), we get a palindrome (75922957).

The spelling of 40702253 in words is "forty million, seven hundred two thousand, two hundred fifty-three".