42550291 has 8 divisors (see below), whose sum is σ = 51188480. Its totient is φ = 34552008.

The previous prime is 42550289. The next prime is 42550309. The reversal of 42550291 is 19205524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42550291 - 2¹ = 42550289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42550231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159831 + ... + 160096.

It is an arithmetic number, because the mean of its divisors is an integer number (6398560).

Almost surely, 2^42550291 is an apocalyptic number.

42550291 is a deficient number, since it is larger than the sum of its proper divisors (8638189).

42550291 is a wasteful number, since it uses less digits than its factorization.

42550291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319953.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 42550291 is about 6523.0584084461. The cubic root of 42550291 is about 349.1141981439.

The spelling of 42550291 in words is "forty-two million, five hundred fifty thousand, two hundred ninety-one".