40733257 has 2 divisors, whose sum is σ = 40733258. Its totient is φ = 40733256.

The previous prime is 40733249. The next prime is 40733261. The reversal of 40733257 is 75233704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40691641 + 41616 = 6379^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 40733257 - 2³ = 40733249 is a prime.

It is not a weakly prime, because it can be changed into another prime (40733227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20366628 + 20366629.

It is an arithmetic number, because the mean of its divisors is an integer number (20366629).

Almost surely, 2^40733257 is an apocalyptic number.

It is an amenable number.

40733257 is a deficient number, since it is larger than the sum of its proper divisors (1).

40733257 is an equidigital number, since it uses as much as digits as its factorization.

40733257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 40733257 is about 6382.2611196973. The cubic root of 40733257 is about 344.0723014829.

The spelling of 40733257 in words is "forty million, seven hundred thirty-three thousand, two hundred fifty-seven".