255347531 has 4 divisors (see below), whose sum is σ = 270367992. Its totient is φ = 240327072.

The previous prime is 255347507. The next prime is 255347537. The reversal of 255347531 is 135743552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255347531 is a prime.

It is a super-2 number, since 2×255347531² = 130404723175591922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255347491 and 255347500.

It is not an unprimeable number, because it can be changed into a prime (255347537) 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, 7510205 + ... + 7510238.

It is an arithmetic number, because the mean of its divisors is an integer number (67591998).

Almost surely, 2^255347531 is an apocalyptic number.

255347531 is a deficient number, since it is larger than the sum of its proper divisors (15020461).

255347531 is a wasteful number, since it uses less digits than its factorization.

255347531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15020460.

The product of its digits is 63000, while the sum is 35.

The square root of 255347531 is about 15979.5973353524. The cubic root of 255347531 is about 634.4205191471.

The spelling of 255347531 in words is "two hundred fifty-five million, three hundred forty-seven thousand, five hundred thirty-one".