53919555 has 16 divisors (see below), whose sum is σ = 89246880. Its totient is φ = 27765248.

The previous prime is 53919553. The next prime is 53919559. The reversal of 53919555 is 55591935.

It is a cyclic number.

It is not a de Polignac number, because 53919555 - 2¹ = 53919553 is a prime.

It is a super-2 number, since 2×53919555² = 5814636822796050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53919553) 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, 61542 + ... + 62411.

It is an arithmetic number, because the mean of its divisors is an integer number (5577930).

Almost surely, 2^53919555 is an apocalyptic number.

53919555 is a deficient number, since it is larger than the sum of its proper divisors (35327325).

53919555 is a wasteful number, since it uses less digits than its factorization.

53919555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123990.

The product of its digits is 151875, while the sum is 42.

The square root of 53919555 is about 7342.9935993435. The cubic root of 53919555 is about 377.7885284490.

The spelling of 53919555 in words is "fifty-three million, nine hundred nineteen thousand, five hundred fifty-five".