249990501 has 4 divisors (see below), whose sum is σ = 333320672. Its totient is φ = 166660332.

The previous prime is 249990421. The next prime is 249990511. The reversal of 249990501 is 105099942.

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.

It is not a de Polignac number, because 249990501 - 2¹³ = 249982309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249990501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249990511) 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, 41665081 + ... + 41665086.

It is an arithmetic number, because the mean of its divisors is an integer number (83330168).

Almost surely, 2^249990501 is an apocalyptic number.

It is an amenable number.

249990501 is a deficient number, since it is larger than the sum of its proper divisors (83330171).

249990501 is an equidigital number, since it uses as much as digits as its factorization.

249990501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83330170.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 249990501 is about 15811.0879132335. The cubic root of 249990501 is about 629.9525461863.

The spelling of 249990501 in words is "two hundred forty-nine million, nine hundred ninety thousand, five hundred one".