245133715 has 4 divisors (see below), whose sum is σ = 294160464. Its totient is φ = 196106968.

The previous prime is 245133673. The next prime is 245133719. The reversal of 245133715 is 517331542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245133715 - 2¹³ = 245125523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245133719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24513367 + ... + 24513376.

It is an arithmetic number, because the mean of its divisors is an integer number (73540116).

Almost surely, 2^245133715 is an apocalyptic number.

245133715 is a deficient number, since it is larger than the sum of its proper divisors (49026749).

245133715 is an equidigital number, since it uses as much as digits as its factorization.

245133715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49026748.

The product of its digits is 12600, while the sum is 31.

The square root of 245133715 is about 15656.7466288498. The cubic root of 245133715 is about 625.8462903510.

The spelling of 245133715 in words is "two hundred forty-five million, one hundred thirty-three thousand, seven hundred fifteen".