245291451 has 8 divisors (see below), whose sum is σ = 327614784. Its totient is φ = 163247880.

The previous prime is 245291447. The next prime is 245291531. The reversal of 245291451 is 154192542.

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

It is not a de Polignac number, because 245291451 - 2² = 245291447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245291051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67885 + ... + 71406.

It is an arithmetic number, because the mean of its divisors is an integer number (40951848).

Almost surely, 2^245291451 is an apocalyptic number.

245291451 is a deficient number, since it is larger than the sum of its proper divisors (82323333).

245291451 is a wasteful number, since it uses less digits than its factorization.

245291451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139881.

The product of its digits is 14400, while the sum is 33.

The square root of 245291451 is about 15661.7831360289. The cubic root of 245291451 is about 625.9804991765.

The spelling of 245291451 in words is "two hundred forty-five million, two hundred ninety-one thousand, four hundred fifty-one".