1253577216 has 40 divisors (see below), whose sum is σ = 3339612144. Its totient is φ = 417858560.

The previous prime is 1253577209. The next prime is 1253577223. The reversal of 1253577216 is 6127753521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1253577209) and next prime (1253577223).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406530 + ... + 409601.

Almost surely, 2^1253577216 is an apocalyptic number.

1253577216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1253577216 is an abundant number, since it is smaller than the sum of its proper divisors (2086034928).

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

1253577216 is an frugal number, since it uses more digits than its factorization.

1253577216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816152 (or 816136 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 1253577216 is about 35405.8923909566. The cubic root of 1253577216 is about 1078.2439501002.

The spelling of 1253577216 in words is "one billion, two hundred fifty-three million, five hundred seventy-seven thousand, two hundred sixteen".