6461553 has 8 divisors (see below), whose sum is σ = 9846208. Its totient is φ = 3692304.

The previous prime is 6461549. The next prime is 6461561. The reversal of 6461553 is 3551646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6461553 - 2² = 6461549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6461553.

It is not an unprimeable number, because it can be changed into a prime (6461563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153826 + ... + 153867.

It is an arithmetic number, because the mean of its divisors is an integer number (1230776).

Almost surely, 2^6461553 is an apocalyptic number.

It is an amenable number.

6461553 is a deficient number, since it is larger than the sum of its proper divisors (3384655).

6461553 is a wasteful number, since it uses less digits than its factorization.

6461553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307703.

The product of its digits is 10800, while the sum is 30.

The square root of 6461553 is about 2541.9584969075. The cubic root of 6461553 is about 186.2568713589.

The spelling of 6461553 in words is "six million, four hundred sixty-one thousand, five hundred fifty-three".