5721537 has 16 divisors (see below), whose sum is σ = 8268480. Its totient is φ = 3505152.

The previous prime is 5721523. The next prime is 5721539. The reversal of 5721537 is 7351275.

It is not a de Polignac number, because 5721537 - 2⁷ = 5721409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5721539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889 + ... + 3497.

It is an arithmetic number, because the mean of its divisors is an integer number (516780).

Almost surely, 2^5721537 is an apocalyptic number.

It is an amenable number.

5721537 is a deficient number, since it is larger than the sum of its proper divisors (2546943).

5721537 is a wasteful number, since it uses less digits than its factorization.

5721537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672.

The product of its digits is 7350, while the sum is 30.

The square root of 5721537 is about 2391.9734530299. The cubic root of 5721537 is about 178.8562978033.

The spelling of 5721537 in words is "five million, seven hundred twenty-one thousand, five hundred thirty-seven".