53278629 has 16 divisors (see below), whose sum is σ = 75411648. Its totient is φ = 33343232.

The previous prime is 53278609. The next prime is 53278633. The reversal of 53278629 is 92687235.

It is a cyclic number.

It is not a de Polignac number, because 53278629 - 2¹¹ = 53276581 is a prime.

It is a super-2 number, since 2×53278629² = 5677224616239282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53278609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22699 + ... + 24935.

It is an arithmetic number, because the mean of its divisors is an integer number (4713228).

Almost surely, 2^53278629 is an apocalyptic number.

It is an amenable number.

53278629 is a deficient number, since it is larger than the sum of its proper divisors (22133019).

53278629 is a wasteful number, since it uses less digits than its factorization.

53278629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724.

The product of its digits is 181440, while the sum is 42.

The square root of 53278629 is about 7299.2211228322. The cubic root of 53278629 is about 376.2856706541.

The spelling of 53278629 in words is "fifty-three million, two hundred seventy-eight thousand, six hundred twenty-nine".