261254983 has 16 divisors (see below), whose sum is σ = 290513952. Its totient is φ = 232960000.

The previous prime is 261254969. The next prime is 261255019. The reversal of 261254983 is 389452162.

It is a cyclic number.

It is not a de Polignac number, because 261254983 - 2⁵ = 261254951 is a prime.

It is a super-2 number, since 2×261254983² = 136508332284660578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261254083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124503 + ... + 126583.

It is an arithmetic number, because the mean of its divisors is an integer number (18157122).

Almost surely, 2^261254983 is an apocalyptic number.

261254983 is a deficient number, since it is larger than the sum of its proper divisors (29258969).

261254983 is a wasteful number, since it uses less digits than its factorization.

261254983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306.

The product of its digits is 103680, while the sum is 40.

The square root of 261254983 is about 16163.3840206808. The cubic root of 261254983 is about 639.2756967112.

The spelling of 261254983 in words is "two hundred sixty-one million, two hundred fifty-four thousand, nine hundred eighty-three".