2131572 has 24 divisors (see below), whose sum is σ = 5236000. Its totient is φ = 673056.

The previous prime is 2131567. The next prime is 2131573. The reversal of 2131572 is 2751312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131573) 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, 4447 + ... + 4902.

2^2131572 is an apocalyptic number.

It is an amenable number.

2131572 is an abundant number, since it is smaller than the sum of its proper divisors (3104428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131572 is a wasteful number, since it uses less digits than its factorization.

2131572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375 (or 9373 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 2131572 is about 1459.9904109274. The cubic root of 2131572 is about 128.6964800963.

Adding to 2131572 its reverse (2751312), we get a palindrome (4882884).

The spelling of 2131572 in words is "two million, one hundred thirty-one thousand, five hundred seventy-two".