11257247 has 16 divisors (see below), whose sum is σ = 12628224. Its totient is φ = 9984000.

The previous prime is 11257243. The next prime is 11257313. The reversal of 11257247 is 74275211.

It is a cyclic number.

It is not a de Polignac number, because 11257247 - 2² = 11257243 is a prime.

It is a super-2 number, since 2×11257247² = 253451220038018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11257241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21347 + ... + 21867.

It is an arithmetic number, because the mean of its divisors is an integer number (789264).

Almost surely, 2^11257247 is an apocalyptic number.

11257247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11257247 is a deficient number, since it is larger than the sum of its proper divisors (1370977).

11257247 is a wasteful number, since it uses less digits than its factorization.

11257247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its digits is 3920, while the sum is 29.

The square root of 11257247 is about 3355.1821113019. The cubic root of 11257247 is about 224.1183406895.

The spelling of 11257247 in words is "eleven million, two hundred fifty-seven thousand, two hundred forty-seven".