1520537 has 2 divisors, whose sum is σ = 1520538. Its totient is φ = 1520536.

The previous prime is 1520527. The next prime is 1520539. The reversal of 1520537 is 7350251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808201 + 712336 = 899^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520537 - 2⁶ = 1520473 is a prime.

Together with 1520539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1520539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760268 + 760269.

It is an arithmetic number, because the mean of its divisors is an integer number (760269).

2^1520537 is an apocalyptic number.

It is an amenable number.

1520537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520537 is an equidigital number, since it uses as much as digits as its factorization.

1520537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1520537 is about 1233.1005636200. The cubic root of 1520537 is about 114.9914801502.

Adding to 1520537 its reverse (7350251), we get a palindrome (8870788).

The spelling of 1520537 in words is "one million, five hundred twenty thousand, five hundred thirty-seven".