245398445 has 4 divisors (see below), whose sum is σ = 294478140. Its totient is φ = 196318752.

The previous prime is 245398429. The next prime is 245398469. The reversal of 245398445 is 544893542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64818601 + 180579844 = 8051^2 + 13438^2 .

It is a cyclic number.

It is not a de Polignac number, because 245398445 - 2⁴ = 245398429 is a prime.

It is a super-3 number, since 3×245398445³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245398396 and 245398405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24539840 + ... + 24539849.

It is an arithmetic number, because the mean of its divisors is an integer number (73619535).

Almost surely, 2^245398445 is an apocalyptic number.

It is an amenable number.

245398445 is a deficient number, since it is larger than the sum of its proper divisors (49079695).

245398445 is an equidigital number, since it uses as much as digits as its factorization.

245398445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49079694.

The product of its digits is 691200, while the sum is 44.

The square root of 245398445 is about 15665.1985305007. The cubic root of 245398445 is about 626.0715016981.

The spelling of 245398445 in words is "two hundred forty-five million, three hundred ninety-eight thousand, four hundred forty-five".