53780266 has 8 divisors (see below), whose sum is σ = 82192644. Its totient is φ = 26382720.

The previous prime is 53780263. The next prime is 53780291. The reversal of 53780266 is 66208735.

It can be written as a sum of positive squares in 2 ways, for example, as 49491225 + 4289041 = 7035^2 + 2071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×53780266² = 5784634022061512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53780261) 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, 253575 + ... + 253786.

Almost surely, 2^53780266 is an apocalyptic number.

53780266 is a deficient number, since it is larger than the sum of its proper divisors (28412378).

53780266 is a wasteful number, since it uses less digits than its factorization.

53780266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507416.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 53780266 is about 7333.5029828861. The cubic root of 53780266 is about 377.4629374604.

The spelling of 53780266 in words is "fifty-three million, seven hundred eighty thousand, two hundred sixty-six".