245855461 has 4 divisors (see below), whose sum is σ = 246159424. Its totient is φ = 245551500.

The previous prime is 245855447. The next prime is 245855473. The reversal of 245855461 is 164558542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164558542 = 2 ⋅82279271.

It is a cyclic number.

It is not a de Polignac number, because 245855461 - 2⁷ = 245855333 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 (245855431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150765 + ... + 152386.

It is an arithmetic number, because the mean of its divisors is an integer number (61539856).

Almost surely, 2^245855461 is an apocalyptic number.

It is an amenable number.

245855461 is a deficient number, since it is larger than the sum of its proper divisors (303963).

245855461 is an equidigital number, since it uses as much as digits as its factorization.

245855461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303962.

The product of its digits is 192000, while the sum is 40.

The square root of 245855461 is about 15679.7787293061. The cubic root of 245855461 is about 626.4599139070.

The spelling of 245855461 in words is "two hundred forty-five million, eight hundred fifty-five thousand, four hundred sixty-one".