43157261 has 16 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 35898288.

The previous prime is 43157243. The next prime is 43157263. The reversal of 43157261 is 16275134.

It is a cyclic number.

It is not a de Polignac number, because 43157261 - 2⁶ = 43157197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43157263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33650 + ... + 34908.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^43157261 is an apocalyptic number.

It is an amenable number.

43157261 is a deficient number, since it is larger than the sum of its proper divisors (7645939).

43157261 is a wasteful number, since it uses less digits than its factorization.

43157261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its digits is 5040, while the sum is 29.

The square root of 43157261 is about 6569.4186196345. The cubic root of 43157261 is about 350.7663778182.

The spelling of 43157261 in words is "forty-three million, one hundred fifty-seven thousand, two hundred sixty-one".