1253552399 has 4 divisors (see below), whose sum is σ = 1367511720. Its totient is φ = 1139593080.

The previous prime is 1253552393. The next prime is 1253552407. The reversal of 1253552399 is 9932553521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253552399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253552393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56979644 + ... + 56979665.

It is an arithmetic number, because the mean of its divisors is an integer number (341877930).

Almost surely, 2^1253552399 is an apocalyptic number.

1253552399 is a deficient number, since it is larger than the sum of its proper divisors (113959321).

1253552399 is a wasteful number, since it uses less digits than its factorization.

1253552399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113959320.

The product of its digits is 364500, while the sum is 44.

The square root of 1253552399 is about 35405.5419249586. The cubic root of 1253552399 is about 1078.2368347410.

The spelling of 1253552399 in words is "one billion, two hundred fifty-three million, five hundred fifty-two thousand, three hundred ninety-nine".