1587261 has 8 divisors (see below), whose sum is σ = 2279200. Its totient is φ = 976752.

The previous prime is 1587251. The next prime is 1587283. The reversal of 1587261 is 1627851.

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

It is not a de Polignac number, because 1587261 - 2⁶ = 1587197 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 (1587221) 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, 20311 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (284900).

2^1587261 is an apocalyptic number.

It is an amenable number.

1587261 is a deficient number, since it is larger than the sum of its proper divisors (691939).

1587261 is a wasteful number, since it uses less digits than its factorization.

1587261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40715.

The product of its digits is 3360, while the sum is 30.

The square root of 1587261 is about 1259.8654690085. The cubic root of 1587261 is about 116.6494732032.

The spelling of 1587261 in words is "one million, five hundred eighty-seven thousand, two hundred sixty-one".