722542537 has 2 divisors, whose sum is σ = 722542538. Its totient is φ = 722542536.

The previous prime is 722542501. The next prime is 722542543. The reversal of 722542537 is 735245227.

722542537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698227776 + 24314761 = 26424^2 + 4931^2 .

It is an emirp because it is prime and its reverse (735245227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722542537 - 2¹⁵ = 722509769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722542496 and 722542505.

It is not a weakly prime, because it can be changed into another prime (722542547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361271268 + 361271269.

It is an arithmetic number, because the mean of its divisors is an integer number (361271269).

Almost surely, 2^722542537 is an apocalyptic number.

It is an amenable number.

722542537 is a deficient number, since it is larger than the sum of its proper divisors (1).

722542537 is an equidigital number, since it uses as much as digits as its factorization.

722542537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 37.

The square root of 722542537 is about 26880.1513574608. The cubic root of 722542537 is about 897.3347226064.

The spelling of 722542537 in words is "seven hundred twenty-two million, five hundred forty-two thousand, five hundred thirty-seven".