1520250445 has 16 divisors (see below), whose sum is σ = 2106413568. Its totient is φ = 1031708160.

The previous prime is 1520250397. The next prime is 1520250497. The reversal of 1520250445 is 5440520251.

It is a de Polignac number, because none of the positive numbers 2^k-1520250445 is a prime.

It is a super-2 number, since 2×1520250445² = 4622322831045396050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220501 + ... + 227290.

It is an arithmetic number, because the mean of its divisors is an integer number (131650848).

Almost surely, 2^1520250445 is an apocalyptic number.

It is an amenable number.

1520250445 is a deficient number, since it is larger than the sum of its proper divisors (586163123).

1520250445 is an equidigital number, since it uses as much as digits as its factorization.

1520250445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447900.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1520250445 is about 38990.3891362987. The cubic root of 1520250445 is about 1149.8425606776.

Adding to 1520250445 its reverse (5440520251), we get a palindrome (6960770696).

The spelling of 1520250445 in words is "one billion, five hundred twenty million, two hundred fifty thousand, four hundred forty-five".