245162221 has 8 divisors (see below), whose sum is σ = 261771840. Its totient is φ = 229048512.

The previous prime is 245162213. The next prime is 245162227. The reversal of 245162221 is 122261542.

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 245162221 - 2³ = 245162213 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 (245162227) 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, 122956 + ... + 124933.

It is an arithmetic number, because the mean of its divisors is an integer number (32721480).

Almost surely, 2^245162221 is an apocalyptic number.

It is an amenable number.

245162221 is a deficient number, since it is larger than the sum of its proper divisors (16609619).

245162221 is a wasteful number, since it uses less digits than its factorization.

245162221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247955.

The product of its digits is 1920, while the sum is 25.

The square root of 245162221 is about 15657.6569447667. The cubic root of 245162221 is about 625.8705487887.

The spelling of 245162221 in words is "two hundred forty-five million, one hundred sixty-two thousand, two hundred twenty-one".