1522242545 has 4 divisors (see below), whose sum is σ = 1826691060. Its totient is φ = 1217794032.

The previous prime is 1522242529. The next prime is 1522242563. The reversal of 1522242545 is 5452422251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452422251 = 23 ⋅237061837.

It can be written as a sum of positive squares in 2 ways, for example, as 436935409 + 1085307136 = 20903^2 + 32944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1522242545 - 2⁴ = 1522242529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152224250 + ... + 152224259.

It is an arithmetic number, because the mean of its divisors is an integer number (456672765).

Almost surely, 2^1522242545 is an apocalyptic number.

It is an amenable number.

1522242545 is a deficient number, since it is larger than the sum of its proper divisors (304448515).

1522242545 is an equidigital number, since it uses as much as digits as its factorization.

1522242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304448514.

The product of its digits is 32000, while the sum is 32.

The square root of 1522242545 is about 39015.9268120085. The cubic root of 1522242545 is about 1150.3445835699.

Adding to 1522242545 its reverse (5452422251), we get a palindrome (6974664796).

The spelling of 1522242545 in words is "one billion, five hundred twenty-two million, two hundred forty-two thousand, five hundred forty-five".