245271791 has 8 divisors (see below), whose sum is σ = 253155840. Its totient is φ = 237512088.

The previous prime is 245271787. The next prime is 245271797. The reversal of 245271791 is 197172542.

It is a happy number.

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 245271791 - 2² = 245271787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245271797) 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, 27071 + ... + 34976.

It is an arithmetic number, because the mean of its divisors is an integer number (31644480).

Almost surely, 2^245271791 is an apocalyptic number.

245271791 is a deficient number, since it is larger than the sum of its proper divisors (7884049).

245271791 is an equidigital number, since it uses as much as digits as its factorization.

245271791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62173.

The product of its digits is 35280, while the sum is 38.

The square root of 245271791 is about 15661.1554809982. The cubic root of 245271791 is about 625.9637747107.

The spelling of 245271791 in words is "two hundred forty-five million, two hundred seventy-one thousand, seven hundred ninety-one".