2453661 has 48 divisors (see below), whose sum is σ = 4492800. Its totient is φ = 1257984.

The previous prime is 2453657. The next prime is 2453687. The reversal of 2453661 is 1663542.

2453661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2453661 - 2² = 2453657 is a prime.

Its product of digits (4320) is a multiple of the sum of its prime divisors (135).

2453661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2453651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31020 + ... + 31098.

It is an arithmetic number, because the mean of its divisors is an integer number (93600).

2^2453661 is an apocalyptic number.

2453661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2453661 is a deficient number, since it is larger than the sum of its proper divisors (2039139).

2453661 is a wasteful number, since it uses less digits than its factorization.

2453661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2453661 is about 1566.4166112500. The cubic root of 2453661 is about 134.8770897769.

The spelling of 2453661 in words is "two million, four hundred fifty-three thousand, six hundred sixty-one".