245423887 has 4 divisors (see below), whose sum is σ = 245495536. Its totient is φ = 245352240.

The previous prime is 245423863. The next prime is 245423891. The reversal of 245423887 is 788324542.

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 245423887 - 2¹⁵ = 245391119 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 (245423837) 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, 30414 + ... + 37627.

It is an arithmetic number, because the mean of its divisors is an integer number (61373884).

Almost surely, 2^245423887 is an apocalyptic number.

245423887 is a deficient number, since it is larger than the sum of its proper divisors (71649).

245423887 is an equidigital number, since it uses as much as digits as its factorization.

245423887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71648.

The product of its digits is 430080, while the sum is 43.

The square root of 245423887 is about 15666.0105642758. The cubic root of 245423887 is about 626.0931372070.

The spelling of 245423887 in words is "two hundred forty-five million, four hundred twenty-three thousand, eight hundred eighty-seven".