3427557261 has 4 divisors (see below), whose sum is σ = 4570076352. Its totient is φ = 2285038172.

The previous prime is 3427557227. The next prime is 3427557277. The reversal of 3427557261 is 1627557243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3427557261 - 2¹¹ = 3427555213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427557061) 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 3 ways as a sum of consecutive naturals, for example, 571259541 + ... + 571259546.

It is an arithmetic number, because the mean of its divisors is an integer number (1142519088).

Almost surely, 2^3427557261 is an apocalyptic number.

It is an amenable number.

3427557261 is a deficient number, since it is larger than the sum of its proper divisors (1142519091).

3427557261 is a wasteful number, since it uses less digits than its factorization.

3427557261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142519090.

The product of its digits is 352800, while the sum is 42.

The square root of 3427557261 is about 58545.3436320943. The cubic root of 3427557261 is about 1507.7461897264.

The spelling of 3427557261 in words is "three billion, four hundred twenty-seven million, five hundred fifty-seven thousand, two hundred sixty-one".