53782402 has 4 divisors (see below), whose sum is σ = 80673606. Its totient is φ = 26891200.

The previous prime is 53782397. The next prime is 53782403. The reversal of 53782402 is 20428735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20428735 = 5 ⋅4085747.

It can be written as a sum of positive squares in only one way, i.e., 45711121 + 8071281 = 6761^2 + 2841^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53782403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13445599 + ... + 13445602.

Almost surely, 2^53782402 is an apocalyptic number.

53782402 is a deficient number, since it is larger than the sum of its proper divisors (26891204).

53782402 is a wasteful number, since it uses less digits than its factorization.

53782402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891203.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 53782402 is about 7333.6486144347. The cubic root of 53782402 is about 377.4679346476.

The spelling of 53782402 in words is "fifty-three million, seven hundred eighty-two thousand, four hundred two".