256132553 has 8 divisors (see below), whose sum is σ = 271128000. Its totient is φ = 241548048.

The previous prime is 256132549. The next prime is 256132561. The reversal of 256132553 is 355231652.

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

It is a cyclic number.

It is not a de Polignac number, because 256132553 - 2² = 256132549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256132543) 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 7 ways as a sum of consecutive naturals, for example, 101453 + ... + 103946.

It is an arithmetic number, because the mean of its divisors is an integer number (33891000).

Almost surely, 2^256132553 is an apocalyptic number.

It is an amenable number.

256132553 is a deficient number, since it is larger than the sum of its proper divisors (14995447).

256132553 is a wasteful number, since it uses less digits than its factorization.

256132553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205471.

The product of its digits is 27000, while the sum is 32.

The square root of 256132553 is about 16004.1417451858. The cubic root of 256132553 is about 635.0699929047.

Subtracting 256132553 from its reverse (355231652), we obtain a palindrome (99099099).

The spelling of 256132553 in words is "two hundred fifty-six million, one hundred thirty-two thousand, five hundred fifty-three".