261053414 has 4 divisors (see below), whose sum is σ = 391580124. Its totient is φ = 130526706.

The previous prime is 261053413. The next prime is 261053417. The reversal of 261053414 is 414350162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 414350162 = 2 ⋅207175081.

It is a super-2 number, since 2×261053414² = 136297769922110792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261053413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65263352 + ... + 65263355.

It is an arithmetic number, because the mean of its divisors is an integer number (97895031).

Almost surely, 2^261053414 is an apocalyptic number.

261053414 is a deficient number, since it is larger than the sum of its proper divisors (130526710).

261053414 is a wasteful number, since it uses less digits than its factorization.

261053414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130526709.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 261053414 is about 16157.1474586327. The cubic root of 261053414 is about 639.1112452170. Note that the first 3 decimals are identical.

The spelling of 261053414 in words is "two hundred sixty-one million, fifty-three thousand, four hundred fourteen".