1550791272 has 64 divisors (see below), whose sum is σ = 4117176000. Its totient is φ = 485084160.

The previous prime is 1550791247. The next prime is 1550791303. The reversal of 1550791272 is 2721970551.

It is a happy number.

1550791272 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1550791272² = 4809907138622755968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1550791272.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136947 + ... + 147837.

It is an arithmetic number, because the mean of its divisors is an integer number (64330875).

Almost surely, 2^1550791272 is an apocalyptic number.

1550791272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550791272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058588000).

1550791272 is an abundant number, since it is smaller than the sum of its proper divisors (2566384728).

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

1550791272 is a wasteful number, since it uses less digits than its factorization.

1550791272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266 (or 11262 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 1550791272 is about 39380.0872523157. The cubic root of 1550791272 is about 1157.4914259667.

The spelling of 1550791272 in words is "one billion, five hundred fifty million, seven hundred ninety-one thousand, two hundred seventy-two".