53403311 has 4 divisors (see below), whose sum is σ = 57511272. Its totient is φ = 49295352.

The previous prime is 53403299. The next prime is 53403323. The reversal of 53403311 is 11330435.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11330435 = 5 ⋅2266087.

It is an interprime number because it is at equal distance from previous prime (53403299) and next prime (53403323).

It is a cyclic number.

It is not a de Polignac number, because 53403311 - 2²² = 49209007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53403331) 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, 2053961 + ... + 2053986.

It is an arithmetic number, because the mean of its divisors is an integer number (14377818).

Almost surely, 2^53403311 is an apocalyptic number.

53403311 is a deficient number, since it is larger than the sum of its proper divisors (4107961).

53403311 is a wasteful number, since it uses less digits than its factorization.

53403311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107960.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 53403311 is about 7307.7569061922. The cubic root of 53403311 is about 376.5789683666.

Adding to 53403311 its reverse (11330435), we get a palindrome (64733746).

The spelling of 53403311 in words is "fifty-three million, four hundred three thousand, three hundred eleven".