53387719 has 16 divisors (see below), whose sum is σ = 66721536. Its totient is φ = 41500800.

The previous prime is 53387689. The next prime is 53387731. The reversal of 53387719 is 91778335.

It is not a de Polignac number, because 53387719 - 2⁵ = 53387687 is a prime.

It is a super-2 number, since 2×53387719² = 5700497080045922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53387759) 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, 60159 + ... + 61039.

It is an arithmetic number, because the mean of its divisors is an integer number (4170096).

Almost surely, 2^53387719 is an apocalyptic number.

53387719 is a deficient number, since it is larger than the sum of its proper divisors (13333817).

53387719 is a wasteful number, since it uses less digits than its factorization.

53387719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its digits is 158760, while the sum is 43.

The square root of 53387719 is about 7306.6900166902. The cubic root of 53387719 is about 376.5423152659.

The spelling of 53387719 in words is "fifty-three million, three hundred eighty-seven thousand, seven hundred nineteen".