1406601253 has 4 divisors (see below), whose sum is σ = 1407091360. Its totient is φ = 1406111148.

The previous prime is 1406601191. The next prime is 1406601299. The reversal of 1406601253 is 3521066041.

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 a cyclic number.

It is not a de Polignac number, because 1406601253 - 2¹⁷ = 1406470181 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 (1406601353) 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, 240723 + ... + 246496.

It is an arithmetic number, because the mean of its divisors is an integer number (351772840).

Almost surely, 2^1406601253 is an apocalyptic number.

It is an amenable number.

1406601253 is a deficient number, since it is larger than the sum of its proper divisors (490107).

1406601253 is an equidigital number, since it uses as much as digits as its factorization.

1406601253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490106.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1406601253 is about 37504.6830809167. The cubic root of 1406601253 is about 1120.4444592804. Note that the first 4 decimals are identical.

Adding to 1406601253 its reverse (3521066041), we get a palindrome (4927667294).

The spelling of 1406601253 in words is "one billion, four hundred six million, six hundred one thousand, two hundred fifty-three".