53457919 has 4 divisors (see below), whose sum is σ = 55182400. Its totient is φ = 51733440.

The previous prime is 53457917. The next prime is 53457931. The reversal of 53457919 is 91975435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91975435 = 5 ⋅18395087.

It is a cyclic number.

It is not a de Polignac number, because 53457919 - 2¹ = 53457917 is a prime.

It is a super-2 number, since 2×53457919² = 5715498207621122, 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 (53457917) 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, 862194 + ... + 862255.

It is an arithmetic number, because the mean of its divisors is an integer number (13795600).

Almost surely, 2^53457919 is an apocalyptic number.

53457919 is a deficient number, since it is larger than the sum of its proper divisors (1724481).

53457919 is a wasteful number, since it uses less digits than its factorization.

53457919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724480.

The product of its digits is 170100, while the sum is 43.

The square root of 53457919 is about 7311.4922553471. The cubic root of 53457919 is about 376.7072826261.

The spelling of 53457919 in words is "fifty-three million, four hundred fifty-seven thousand, nine hundred nineteen".