53426666 has 4 divisors (see below), whose sum is σ = 80140002. Its totient is φ = 26713332.

The previous prime is 53426663. The next prime is 53426687. The reversal of 53426666 is 66662435.

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

It can be written as a sum of positive squares in only one way, i.e., 37466641 + 15960025 = 6121^2 + 3995^2 .

53426666 is a modest number, since divided by 6666 gives 5342 as remainder.

It is not an unprimeable number, because it can be changed into a prime (53426663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13356665 + ... + 13356668.

Almost surely, 2^53426666 is an apocalyptic number.

53426666 is a deficient number, since it is larger than the sum of its proper divisors (26713336).

53426666 is a wasteful number, since it uses less digits than its factorization.

53426666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26713335.

The product of its digits is 155520, while the sum is 38.

The square root of 53426666 is about 7309.3546910791. The cubic root of 53426666 is about 376.6338570982.

The spelling of 53426666 in words is "fifty-three million, four hundred twenty-six thousand, six hundred sixty-six".