53436778 has 8 divisors (see below), whose sum is σ = 84373920. Its totient is φ = 25312140.

The previous prime is 53436767. The next prime is 53436781. The reversal of 53436778 is 87763435.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703078 + ... + 703153.

It is an arithmetic number, because the mean of its divisors is an integer number (10546740).

Almost surely, 2^53436778 is an apocalyptic number.

53436778 is a deficient number, since it is larger than the sum of its proper divisors (30937142).

53436778 is a wasteful number, since it uses less digits than its factorization.

53436778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406252.

The product of its digits is 423360, while the sum is 43.

The square root of 53436778 is about 7310.0463746819. The cubic root of 53436778 is about 376.6576172763.

It can be divided in two parts, 5343 and 6778, that added together give a palindrome (12121).

The spelling of 53436778 in words is "fifty-three million, four hundred thirty-six thousand, seven hundred seventy-eight".