53061518 has 4 divisors (see below), whose sum is σ = 79592280. Its totient is φ = 26530758.

The previous prime is 53061517. The next prime is 53061563. The reversal of 53061518 is 81516035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81516035 = 5 ⋅16303207.

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 as a sum of consecutive naturals, namely, 13265378 + ... + 13265381.

It is an arithmetic number, because the mean of its divisors is an integer number (19898070).

Almost surely, 2^53061518 is an apocalyptic number.

53061518 is a deficient number, since it is larger than the sum of its proper divisors (26530762).

53061518 is a wasteful number, since it uses less digits than its factorization.

53061518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26530761.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 53061518 is about 7284.3337375494. Note that the first 3 decimals coincide. The cubic root of 53061518 is about 375.7738520503.

It can be divided in two parts, 5306 and 1518, that multiplied together give a palindrome (8054508).

The spelling of 53061518 in words is "fifty-three million, sixty-one thousand, five hundred eighteen".