53433155 has 4 divisors (see below), whose sum is σ = 64119792. Its totient is φ = 42746520.

The previous prime is 53433137. The next prime is 53433157. The reversal of 53433155 is 55133435.

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

It is not a de Polignac number, because 53433155 - 2¹⁸ = 53171011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53433157) 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, 5343311 + ... + 5343320.

It is an arithmetic number, because the mean of its divisors is an integer number (16029948).

Almost surely, 2^53433155 is an apocalyptic number.

53433155 is a deficient number, since it is larger than the sum of its proper divisors (10686637).

53433155 is a wasteful number, since it uses less digits than its factorization.

53433155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686636.

The product of its digits is 13500, while the sum is 29.

The square root of 53433155 is about 7309.7985608360. The cubic root of 53433155 is about 376.6491046536.

The spelling of 53433155 in words is "fifty-three million, four hundred thirty-three thousand, one hundred fifty-five".