1249311552 has 56 divisors (see below), whose sum is σ = 3308396736. Its totient is φ = 416068608.

The previous prime is 1249311523. The next prime is 1249311571. The reversal of 1249311552 is 2551139421.

It is a happy number.

1249311552 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294148 + ... + 298364.

Almost surely, 2^1249311552 is an apocalyptic number.

1249311552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1249311552 is an abundant number, since it is smaller than the sum of its proper divisors (2059085184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249311552 is a wasteful number, since it uses less digits than its factorization.

1249311552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775 (or 5765 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 1249311552 is about 35345.6015934090. The cubic root of 1249311552 is about 1077.0195465313.

The spelling of 1249311552 in words is "one billion, two hundred forty-nine million, three hundred eleven thousand, five hundred fifty-two".