245041621 has 8 divisors (see below), whose sum is σ = 283042944. Its totient is φ = 209661120.

The previous prime is 245041607. The next prime is 245041627. The reversal of 245041621 is 126140542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245041621 - 2¹¹ = 245039573 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 (245041627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655005 + ... + 655378.

It is an arithmetic number, because the mean of its divisors is an integer number (35380368).

Almost surely, 2^245041621 is an apocalyptic number.

It is an amenable number.

245041621 is a deficient number, since it is larger than the sum of its proper divisors (38001323).

245041621 is a wasteful number, since it uses less digits than its factorization.

245041621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310411.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 245041621 is about 15653.8053201131. The cubic root of 245041621 is about 625.7679060461.

The spelling of 245041621 in words is "two hundred forty-five million, forty-one thousand, six hundred twenty-one".