256060477 has 4 divisors (see below), whose sum is σ = 271122876. Its totient is φ = 240998080.

The previous prime is 256060471. The next prime is 256060487. The reversal of 256060477 is 774060652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161951076 + 94109401 = 12726^2 + 9701^2 .

It is a cyclic number.

It is not a de Polignac number, because 256060477 - 2¹⁹ = 255536189 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 (256060471) 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, 7531174 + ... + 7531207.

It is an arithmetic number, because the mean of its divisors is an integer number (67780719).

Almost surely, 2^256060477 is an apocalyptic number.

It is an amenable number.

256060477 is a deficient number, since it is larger than the sum of its proper divisors (15062399).

256060477 is a wasteful number, since it uses less digits than its factorization.

256060477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15062398.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 256060477 is about 16001.8897946461. The cubic root of 256060477 is about 635.0104175033.

The spelling of 256060477 in words is "two hundred fifty-six million, sixty thousand, four hundred seventy-seven".