1252361513 has 4 divisors (see below), whose sum is σ = 1348697028. Its totient is φ = 1156026000.

The previous prime is 1252361503. The next prime is 1252361527. The reversal of 1252361513 is 3151632521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3151632521 = 5701 ⋅552821.

It can be written as a sum of positive squares in 2 ways, for example, as 782209024 + 470152489 = 27968^2 + 21683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252361513 - 2⁶ = 1252361449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252361503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48167738 + ... + 48167763.

It is an arithmetic number, because the mean of its divisors is an integer number (337174257).

Almost surely, 2^1252361513 is an apocalyptic number.

1252361513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1252361513 is a deficient number, since it is larger than the sum of its proper divisors (96335515).

1252361513 is an equidigital number, since it uses as much as digits as its factorization.

1252361513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96335514.

The product of its digits is 5400, while the sum is 29.

The square root of 1252361513 is about 35388.7201379197. The cubic root of 1252361513 is about 1077.8952816771.

The spelling of 1252361513 in words is "one billion, two hundred fifty-two million, three hundred sixty-one thousand, five hundred thirteen".