20372523 has 8 divisors (see below), whose sum is σ = 27624000. Its totient is φ = 13351368.

The previous prime is 20372509. The next prime is 20372543. The reversal of 20372523 is 32527302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20372523 - 2⁴ = 20372507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20372493 and 20372502.

It is not an unprimeable number, because it can be changed into a prime (20372543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57373 + ... + 57726.

It is an arithmetic number, because the mean of its divisors is an integer number (3453000).

Almost surely, 2^20372523 is an apocalyptic number.

20372523 is a deficient number, since it is larger than the sum of its proper divisors (7251477).

20372523 is a wasteful number, since it uses less digits than its factorization.

20372523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115161.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 20372523 is about 4513.5931362940. The cubic root of 20372523 is about 273.1167100172.

Adding to 20372523 its reverse (32527302), we get a palindrome (52899825).

It can be divided in two parts, 2037 and 2523, that added together give a triangular number (4560 = T₉₅).

The spelling of 20372523 in words is "twenty million, three hundred seventy-two thousand, five hundred twenty-three".