261414151 has 4 divisors (see below), whose sum is σ = 276791472. Its totient is φ = 246036832.

The previous prime is 261414143. The next prime is 261414163. The reversal of 261414151 is 151414162.

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 261414151 - 2³ = 261414143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261414551) 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, 7688635 + ... + 7688668.

It is an arithmetic number, because the mean of its divisors is an integer number (69197868).

Almost surely, 2^261414151 is an apocalyptic number.

261414151 is a deficient number, since it is larger than the sum of its proper divisors (15377321).

261414151 is a wasteful number, since it uses less digits than its factorization.

261414151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377320.

The product of its digits is 960, while the sum is 25.

The square root of 261414151 is about 16168.3069923848. The cubic root of 261414151 is about 639.4054952908.

The spelling of 261414151 in words is "two hundred sixty-one million, four hundred fourteen thousand, one hundred fifty-one".