27249261 has 16 divisors (see below), whose sum is σ = 39868416. Its totient is φ = 16451136.

The previous prime is 27249259. The next prime is 27249263. The reversal of 27249261 is 16294272.

It is an interprime number because it is at equal distance from previous prime (27249259) and next prime (27249263).

It is not a de Polignac number, because 27249261 - 2¹ = 27249259 is a prime.

It is a super-2 number, since 2×27249261² = 1485044450092242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27249263) 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, 4525 + ... + 8658.

It is an arithmetic number, because the mean of its divisors is an integer number (2491776).

Almost surely, 2^27249261 is an apocalyptic number.

It is an amenable number.

27249261 is a deficient number, since it is larger than the sum of its proper divisors (12619155).

27249261 is a wasteful number, since it uses less digits than its factorization.

27249261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13252.

The product of its digits is 12096, while the sum is 33.

The square root of 27249261 is about 5220.0824706129. The cubic root of 27249261 is about 300.9203624447.

The spelling of 27249261 in words is "twenty-seven million, two hundred forty-nine thousand, two hundred sixty-one".