5721512 has 8 divisors (see below), whose sum is σ = 10727850. Its totient is φ = 2860752.

The previous prime is 5721493. The next prime is 5721517. The reversal of 5721512 is 2151275.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5134756 + 586756 = 2266^2 + 766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×5721512² = 65471399132288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5721517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357587 + ... + 357602.

Almost surely, 2^5721512 is an apocalyptic number.

It is an amenable number.

5721512 is a deficient number, since it is larger than the sum of its proper divisors (5006338).

5721512 is a wasteful number, since it uses less digits than its factorization.

5721512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715195 (or 715191 counting only the distinct ones).

The product of its digits is 700, while the sum is 23.

The square root of 5721512 is about 2391.9682272137. The cubic root of 5721512 is about 178.8560373014.

Adding to 5721512 its reverse (2151275), we get a palindrome (7872787).

The spelling of 5721512 in words is "five million, seven hundred twenty-one thousand, five hundred twelve".