1254523531 has 4 divisors (see below), whose sum is σ = 1294992064. Its totient is φ = 1214055000.

The previous prime is 1254523519. The next prime is 1254523541. The reversal of 1254523531 is 1353254521.

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

It is a cyclic number.

It is not a de Polignac number, because 1254523531 - 2²¹ = 1252426379 is a prime.

It is a super-2 number, since 2×1254523531² = 3147658579665415922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 40468501 = 1254523531 / (1 + 2 + 5 + 4 + 5 + 2 + 3 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1254523493 and 1254523502.

It is not an unprimeable number, because it can be changed into a prime (1254523541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20234220 + ... + 20234281.

It is an arithmetic number, because the mean of its divisors is an integer number (323748016).

Almost surely, 2^1254523531 is an apocalyptic number.

1254523531 is a deficient number, since it is larger than the sum of its proper divisors (40468533).

1254523531 is an equidigital number, since it uses as much as digits as its factorization.

1254523531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40468532.

The product of its digits is 18000, while the sum is 31.

The square root of 1254523531 is about 35419.2536764963. The cubic root of 1254523531 is about 1078.5152009826.

The spelling of 1254523531 in words is "one billion, two hundred fifty-four million, five hundred twenty-three thousand, five hundred thirty-one".