53061511 has 4 divisors (see below), whose sum is σ = 53250624. Its totient is φ = 52872400.

The previous prime is 53061499. The next prime is 53061517. The reversal of 53061511 is 11516035.

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

It is a cyclic number.

It is not a de Polignac number, because 53061511 - 2¹⁵ = 53028743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53061517) 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, 94135 + ... + 94696.

It is an arithmetic number, because the mean of its divisors is an integer number (13312656).

Almost surely, 2^53061511 is an apocalyptic number.

53061511 is a deficient number, since it is larger than the sum of its proper divisors (189113).

53061511 is a wasteful number, since it uses less digits than its factorization.

53061511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189112.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 53061511 is about 7284.3332570662. Note that the first 3 decimals coincide. The cubic root of 53061511 is about 375.7738355260.

Adding to 53061511 its reverse (11516035), we get a palindrome (64577546).

The spelling of 53061511 in words is "fifty-three million, sixty-one thousand, five hundred eleven".