3572813 has 4 divisors (see below), whose sum is σ = 3581760. Its totient is φ = 3563868.

The previous prime is 3572731. The next prime is 3572819. The reversal of 3572813 is 3182753.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3182753 = 7 ⋅454679.

It is a cyclic number.

It is not a de Polignac number, because 3572813 - 2¹² = 3568717 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3572819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3845 + ... + 4682.

It is an arithmetic number, because the mean of its divisors is an integer number (895440).

Almost surely, 2^3572813 is an apocalyptic number.

It is an amenable number.

3572813 is a deficient number, since it is larger than the sum of its proper divisors (8947).

3572813 is an equidigital number, since it uses as much as digits as its factorization.

3572813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946.

The product of its digits is 5040, while the sum is 29.

The square root of 3572813 is about 1890.1886149271. The cubic root of 3572813 is about 152.8751027648.

It can be divided in two parts, 35728 and 13, that multiplied together give a palindrome (464464).

The spelling of 3572813 in words is "three million, five hundred seventy-two thousand, eight hundred thirteen".