53307919 has 4 divisors (see below), whose sum is σ = 60923344. Its totient is φ = 45692496.

The previous prime is 53307911. The next prime is 53307923. The reversal of 53307919 is 91970335.

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 53307919 - 2³ = 53307911 is a prime.

It is a super-2 number, since 2×53307919² = 5683468456221122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53307911) 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, 3807702 + ... + 3807715.

It is an arithmetic number, because the mean of its divisors is an integer number (15230836).

Almost surely, 2^53307919 is an apocalyptic number.

53307919 is a deficient number, since it is larger than the sum of its proper divisors (7615425).

53307919 is an equidigital number, since it uses as much as digits as its factorization.

53307919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615424.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 53307919 is about 7301.2272256108. The cubic root of 53307919 is about 376.3546125447.

The spelling of 53307919 in words is "fifty-three million, three hundred seven thousand, nine hundred nineteen".