245540471 has 4 divisors (see below), whose sum is σ = 267862344. Its totient is φ = 223218600.

The previous prime is 245540447. The next prime is 245540483. The reversal of 245540471 is 174045542.

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

It is not a de Polignac number, because 245540471 - 2²⁶ = 178431607 is a prime.

It is a super-3 number, since 3×245540471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245540371) 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, 11160920 + ... + 11160941.

It is an arithmetic number, because the mean of its divisors is an integer number (66965586).

Almost surely, 2^245540471 is an apocalyptic number.

245540471 is a deficient number, since it is larger than the sum of its proper divisors (22321873).

245540471 is a wasteful number, since it uses less digits than its factorization.

245540471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22321872.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 245540471 is about 15669.7310442777. The cubic root of 245540471 is about 626.1922594350.

The spelling of 245540471 in words is "two hundred forty-five million, five hundred forty thousand, four hundred seventy-one".