20852497 has 8 divisors (see below), whose sum is σ = 21525632. Its totient is φ = 20185200.

The previous prime is 20852473. The next prime is 20852501. The reversal of 20852497 is 79425802.

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

It is a cyclic number.

It is not a de Polignac number, because 20852497 - 2⁷ = 20852369 is a prime.

It is a super-2 number, since 2×20852497² = 869653262270018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20852407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6472 + ... + 9142.

It is an arithmetic number, because the mean of its divisors is an integer number (2690704).

Almost surely, 2^20852497 is an apocalyptic number.

It is an amenable number.

20852497 is a deficient number, since it is larger than the sum of its proper divisors (673135).

20852497 is a wasteful number, since it uses less digits than its factorization.

20852497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 20852497 is about 4566.4534378443. The cubic root of 20852497 is about 275.2449475961.

The spelling of 20852497 in words is "twenty million, eight hundred fifty-two thousand, four hundred ninety-seven".