2391201 has 20 divisors (see below), whose sum is σ = 3645972. Its totient is φ = 1561248.

The previous prime is 2391167. The next prime is 2391227. The reversal of 2391201 is 1021932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 1498176 = 945^2 + 1224^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2391201 is a prime.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (2391281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4015 + ... + 4571.

2^2391201 is an apocalyptic number.

It is an amenable number.

2391201 is a deficient number, since it is larger than the sum of its proper divisors (1254771).

2391201 is an equidigital number, since it uses as much as digits as its factorization.

2391201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2391201 is about 1546.3508657481. The cubic root of 2391201 is about 133.7227690800.

It can be divided in two parts, 239120 and 1, that added together give a square (239121 = 489²).

The spelling of 2391201 in words is "two million, three hundred ninety-one thousand, two hundred one".