53487619 has 4 divisors (see below), whose sum is σ = 53639496. Its totient is φ = 53335744.

The previous prime is 53487589. The next prime is 53487647. The reversal of 53487619 is 91678435.

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 53487619 - 2⁵ = 53487587 is a prime.

It is a super-2 number, since 2×53487619² = 5721850772578322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53487649) 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, 75409 + ... + 76114.

It is an arithmetic number, because the mean of its divisors is an integer number (13409874).

Almost surely, 2^53487619 is an apocalyptic number.

53487619 is a deficient number, since it is larger than the sum of its proper divisors (151877).

53487619 is a wasteful number, since it uses less digits than its factorization.

53487619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151876.

The product of its digits is 181440, while the sum is 43.

The square root of 53487619 is about 7313.5230224564. The cubic root of 53487619 is about 376.7770330340. Note that the first 3 decimals are identical.

The spelling of 53487619 in words is "fifty-three million, four hundred eighty-seven thousand, six hundred nineteen".