2147457 has 32 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 1198080.

The previous prime is 2147429. The next prime is 2147461. The reversal of 2147457 is 7547412.

It is not a de Polignac number, because 2147457 - 2⁷ = 2147329 is a prime.

It is a super-2 number, since 2×2147457² = 9223143133698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27144 + ... + 27222.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^2147457 is an apocalyptic number.

It is an amenable number.

2147457 is a deficient number, since it is larger than the sum of its proper divisors (1239423).

2147457 is a wasteful number, since it uses less digits than its factorization.

2147457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its digits is 7840, while the sum is 30.

The square root of 2147457 is about 1465.4204174912. The cubic root of 2147457 is about 129.0153818567.

The spelling of 2147457 in words is "two million, one hundred forty-seven thousand, four hundred fifty-seven".