5661455 has 4 divisors (see below), whose sum is σ = 6793752. Its totient is φ = 4529160.

The previous prime is 5661451. The next prime is 5661457. The reversal of 5661455 is 5541665.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5661455 - 2² = 5661451 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 (5661451) 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, 566141 + ... + 566150.

It is an arithmetic number, because the mean of its divisors is an integer number (1698438).

Almost surely, 2^5661455 is an apocalyptic number.

5661455 is a deficient number, since it is larger than the sum of its proper divisors (1132297).

5661455 is a wasteful number, since it uses less digits than its factorization.

5661455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132296.

The product of its digits is 18000, while the sum is 32.

The square root of 5661455 is about 2379.3812220827. The cubic root of 5661455 is about 178.2280353919.

It can be divided in two parts, 5661 and 455, that added together give a palindrome (6116).

The spelling of 5661455 in words is "five million, six hundred sixty-one thousand, four hundred fifty-five".