1492561 has 4 divisors (see below), whose sum is σ = 1705792. Its totient is φ = 1279332.

The previous prime is 1492541. The next prime is 1492567. The reversal of 1492561 is 1652941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1652941 = 23 ⋅71867.

It is a cyclic number.

It is not a de Polignac number, because 1492561 - 2⁵ = 1492529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492567) 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, 106605 + ... + 106618.

It is an arithmetic number, because the mean of its divisors is an integer number (426448).

2^1492561 is an apocalyptic number.

It is an amenable number.

1492561 is a deficient number, since it is larger than the sum of its proper divisors (213231).

1492561 is an equidigital number, since it uses as much as digits as its factorization.

1492561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213230.

The product of its digits is 2160, while the sum is 28.

The square root of 1492561 is about 1221.7041376700. The cubic root of 1492561 is about 114.2818765824.

Subtracting from 1492561 its product of digits (2160), we obtain a triangular number (1490401 = T₁₇₂₆).

The spelling of 1492561 in words is "one million, four hundred ninety-two thousand, five hundred sixty-one".