2391501 has 16 divisors (see below), whose sum is σ = 3723264. Its totient is φ = 1336944.

The previous prime is 2391491. The next prime is 2391503. The reversal of 2391501 is 1051932.

It is not a de Polignac number, because 2391501 - 2⁵ = 2391469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2391501 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (232704).

2^2391501 is an apocalyptic number.

2391501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2391501 is a deficient number, since it is larger than the sum of its proper divisors (1331763).

2391501 is a wasteful number, since it uses less digits than its factorization.

2391501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2391501 is about 1546.4478652706. The cubic root of 2391501 is about 133.7283611309.

The spelling of 2391501 in words is "two million, three hundred ninety-one thousand, five hundred one".