53442365 has 4 divisors (see below), whose sum is σ = 64130844. Its totient is φ = 42753888.

The previous prime is 53442359. The next prime is 53442371. The reversal of 53442365 is 56324435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56324435 = 5 ⋅11264887.

It is an interprime number because it is at equal distance from previous prime (53442359) and next prime (53442371).

It can be written as a sum of positive squares in 2 ways, for example, as 41512249 + 11930116 = 6443^2 + 3454^2 .

It is a cyclic number.

It is not a de Polignac number, because 53442365 - 2¹⁰ = 53441341 is a prime.

It is a super-3 number, since 3×53442365³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5344232 + ... + 5344241.

It is an arithmetic number, because the mean of its divisors is an integer number (16032711).

Almost surely, 2^53442365 is an apocalyptic number.

It is an amenable number.

53442365 is a deficient number, since it is larger than the sum of its proper divisors (10688479).

53442365 is a wasteful number, since it uses less digits than its factorization.

53442365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10688478.

The product of its digits is 43200, while the sum is 32.

The square root of 53442365 is about 7310.4285100123. The cubic root of 53442365 is about 376.6707437712.

The spelling of 53442365 in words is "fifty-three million, four hundred forty-two thousand, three hundred sixty-five".