40752521 has 2 divisors, whose sum is σ = 40752522. Its totient is φ = 40752520.

The previous prime is 40752499. The next prime is 40752533. The reversal of 40752521 is 12525704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 12503296 = 5315^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 40752521 - 2⁶ = 40752457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40754521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20376260 + 20376261.

It is an arithmetic number, because the mean of its divisors is an integer number (20376261).

Almost surely, 2^40752521 is an apocalyptic number.

It is an amenable number.

40752521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40752521 is an equidigital number, since it uses as much as digits as its factorization.

40752521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 40752521 is about 6383.7701243074. The cubic root of 40752521 is about 344.1265336974.

The spelling of 40752521 in words is "forty million, seven hundred fifty-two thousand, five hundred twenty-one".