20752507 has 2 divisors, whose sum is σ = 20752508. Its totient is φ = 20752506.

The previous prime is 20752499. The next prime is 20752549. The reversal of 20752507 is 70525702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20752507 - 2³ = 20752499 is a prime.

It is not a weakly prime, because it can be changed into another prime (20752307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10376253 + 10376254.

It is an arithmetic number, because the mean of its divisors is an integer number (10376254).

Almost surely, 2^20752507 is an apocalyptic number.

20752507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20752507 is an equidigital number, since it uses as much as digits as its factorization.

20752507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 20752507 is about 4555.4919602607. The cubic root of 20752507 is about 274.8042993323.

It can be divided in two parts, 2075 and 2507, that multiplied together give a palindrome (5202025).

The spelling of 20752507 in words is "twenty million, seven hundred fifty-two thousand, five hundred seven".