1262531 has 4 divisors (see below), whose sum is σ = 1329000. Its totient is φ = 1196064.

The previous prime is 1262519. The next prime is 1262543. The reversal of 1262531 is 1352621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1352621 = 71 ⋅19051.

It is an interprime number because it is at equal distance from previous prime (1262519) and next prime (1262543).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1262531 is a prime.

It is a super-2 number, since 2×1262531² = 3187969051922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1262581) 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, 33206 + ... + 33243.

It is an arithmetic number, because the mean of its divisors is an integer number (332250).

2^1262531 is an apocalyptic number.

1262531 is the 503-rd centered decagonal number.

1262531 is a deficient number, since it is larger than the sum of its proper divisors (66469).

1262531 is an equidigital number, since it uses as much as digits as its factorization.

1262531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66468.

The product of its digits is 360, while the sum is 20.

The square root of 1262531 is about 1123.6240474465. The cubic root of 1262531 is about 108.0805012521.

The spelling of 1262531 in words is "one million, two hundred sixty-two thousand, five hundred thirty-one".