40256501 has 2 divisors, whose sum is σ = 40256502. Its totient is φ = 40256500.

The previous prime is 40256477. The next prime is 40256537. The reversal of 40256501 is 10565204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33651601 + 6604900 = 5801^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 40256501 - 2²² = 36062197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40256591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20128250 + 20128251.

It is an arithmetic number, because the mean of its divisors is an integer number (20128251).

Almost surely, 2^40256501 is an apocalyptic number.

It is an amenable number.

40256501 is a deficient number, since it is larger than the sum of its proper divisors (1).

40256501 is an equidigital number, since it uses as much as digits as its factorization.

40256501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40256501 is about 6344.8011001134. The cubic root of 40256501 is about 342.7246498893.

The spelling of 40256501 in words is "forty million, two hundred fifty-six thousand, five hundred one".