1564401 has 8 divisors (see below), whose sum is σ = 2125440. Its totient is φ = 1023152.

The previous prime is 1564399. The next prime is 1564411. The reversal of 1564401 is 1044651.

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

It is a cyclic number.

It is not a de Polignac number, because 1564401 - 2¹ = 1564399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1564411) 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, 4761 + ... + 5078.

It is an arithmetic number, because the mean of its divisors is an integer number (265680).

2^1564401 is an apocalyptic number.

It is an amenable number.

1564401 is a deficient number, since it is larger than the sum of its proper divisors (561039).

1564401 is an equidigital number, since it uses as much as digits as its factorization.

1564401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1564401 is about 1250.7601688573. The cubic root of 1564401 is about 116.0867612904.

The spelling of 1564401 in words is "one million, five hundred sixty-four thousand, four hundred one".