53987619 has 16 divisors (see below), whose sum is σ = 83427840. Its totient is φ = 30414720.

The previous prime is 53987603. The next prime is 53987629. The reversal of 53987619 is 91678935.

It is not a de Polignac number, because 53987619 - 2⁴ = 53987603 is a prime.

It is a super-2 number, since 2×53987619² = 5829326010578322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53987629) 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, 16614 + ... + 19595.

It is an arithmetic number, because the mean of its divisors is an integer number (5214240).

Almost surely, 2^53987619 is an apocalyptic number.

53987619 is a deficient number, since it is larger than the sum of its proper divisors (29440221).

53987619 is a wasteful number, since it uses less digits than its factorization.

53987619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36290.

The product of its digits is 408240, while the sum is 48.

The square root of 53987619 is about 7347.6267597096. The cubic root of 53987619 is about 377.9474255706.

The spelling of 53987619 in words is "fifty-three million, nine hundred eighty-seven thousand, six hundred nineteen".