40537501 has 2 divisors, whose sum is σ = 40537502. Its totient is φ = 40537500.

The previous prime is 40537499. The next prime is 40537529. The reversal of 40537501 is 10573504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29713401 + 10824100 = 5451^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 40537501 - 2¹ = 40537499 is a prime.

Together with 40537499, 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 (40537591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20268750 + 20268751.

It is an arithmetic number, because the mean of its divisors is an integer number (20268751).

Almost surely, 2^40537501 is an apocalyptic number.

It is an amenable number.

40537501 is a deficient number, since it is larger than the sum of its proper divisors (1).

40537501 is an equidigital number, since it uses as much as digits as its factorization.

40537501 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 40537501 is about 6366.9067057716. The cubic root of 40537501 is about 343.5202349534.

The spelling of 40537501 in words is "forty million, five hundred thirty-seven thousand, five hundred one".