1520272213 has 4 divisors (see below), whose sum is σ = 1600286560. Its totient is φ = 1440257868.

The previous prime is 1520272211. The next prime is 1520272217. The reversal of 1520272213 is 3122720251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3122720251 = 7 ⋅446102893.

It is a cyclic number.

It is not a de Polignac number, because 1520272213 - 2¹ = 1520272211 is a prime.

It is a super-2 number, since 2×1520272213² = 4622455203239834738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520272211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40007145 + ... + 40007182.

It is an arithmetic number, because the mean of its divisors is an integer number (400071640).

Almost surely, 2^1520272213 is an apocalyptic number.

It is an amenable number.

1520272213 is a deficient number, since it is larger than the sum of its proper divisors (80014347).

1520272213 is an equidigital number, since it uses as much as digits as its factorization.

1520272213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80014346.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1520272213 is about 38990.6682810131. The cubic root of 1520272213 is about 1149.8480487324.

Adding to 1520272213 its reverse (3122720251), we get a palindrome (4642992464).

The spelling of 1520272213 in words is "one billion, five hundred twenty million, two hundred seventy-two thousand, two hundred thirteen".