245891550 has 48 divisors (see below), whose sum is σ = 611210880. Its totient is φ = 65420640.

The previous prime is 245891543. The next prime is 245891561. The reversal of 245891550 is 55198542.

It is a super-2 number, since 2×245891550² = 120925308722805000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245891499 and 245891508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73821 + ... + 77079.

It is an arithmetic number, because the mean of its divisors is an integer number (12733560).

Almost surely, 2^245891550 is an apocalyptic number.

245891550 is an abundant number, since it is smaller than the sum of its proper divisors (365319330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245891550 is a wasteful number, since it uses less digits than its factorization.

245891550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 245891550 is about 15680.9295005111. The cubic root of 245891550 is about 626.4905649863.

The spelling of 245891550 in words is "two hundred forty-five million, eight hundred ninety-one thousand, five hundred fifty".