5721139 has 2 divisors, whose sum is σ = 5721140. Its totient is φ = 5721138.

The previous prime is 5721127. The next prime is 5721151. The reversal of 5721139 is 9311275.

It is a balanced prime because it is at equal distance from previous prime (5721127) and next prime (5721151).

It is a cyclic number.

It is not a de Polignac number, because 5721139 - 2⁷ = 5721011 is a prime.

It is not a weakly prime, because it can be changed into another prime (5721119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860569 + 2860570.

It is an arithmetic number, because the mean of its divisors is an integer number (2860570).

Almost surely, 2^5721139 is an apocalyptic number.

5721139 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721139 is an equidigital number, since it uses as much as digits as its factorization.

5721139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 28.

The square root of 5721139 is about 2391.8902566799. The cubic root of 5721139 is about 178.8521505227.

It can be divided in two parts, 572 and 1139, that added together give a triangular number (1711 = T₅₈).

The spelling of 5721139 in words is "five million, seven hundred twenty-one thousand, one hundred thirty-nine".