245520743 has 4 divisors (see below), whose sum is σ = 264406968. Its totient is φ = 226634520.

The previous prime is 245520733. The next prime is 245520767. The reversal of 245520743 is 347025542.

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 245520743 - 2⁴ = 245520727 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 (245520733) 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, 9443093 + ... + 9443118.

It is an arithmetic number, because the mean of its divisors is an integer number (66101742).

Almost surely, 2^245520743 is an apocalyptic number.

245520743 is a deficient number, since it is larger than the sum of its proper divisors (18886225).

245520743 is a wasteful number, since it uses less digits than its factorization.

245520743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18886224.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 245520743 is about 15669.1015377398. The cubic root of 245520743 is about 626.1754884703.

The spelling of 245520743 in words is "two hundred forty-five million, five hundred twenty thousand, seven hundred forty-three".