245421291 has 8 divisors (see below), whose sum is σ = 327322944. Its totient is φ = 163566920.

The previous prime is 245421283. The next prime is 245421307. The reversal of 245421291 is 192124542.

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 245421291 - 2³ = 245421283 is a prime.

It is a super-2 number, since 2×245421291² = 120463220152213362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245421251) 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, 2920 + ... + 22346.

It is an arithmetic number, because the mean of its divisors is an integer number (40915368).

Almost surely, 2^245421291 is an apocalyptic number.

245421291 is a deficient number, since it is larger than the sum of its proper divisors (81901653).

245421291 is a wasteful number, since it uses less digits than its factorization.

245421291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23641.

The product of its digits is 5760, while the sum is 30.

The square root of 245421291 is about 15665.9277095230. The cubic root of 245421291 is about 626.0909296747.

The spelling of 245421291 in words is "two hundred forty-five million, four hundred twenty-one thousand, two hundred ninety-one".