53213245 has 4 divisors (see below), whose sum is σ = 63855900. Its totient is φ = 42570592.

The previous prime is 53213233. The next prime is 53213257. The reversal of 53213245 is 54231235.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53213233) and next prime (53213257).

It can be written as a sum of positive squares in 2 ways, for example, as 16695396 + 36517849 = 4086^2 + 6043^2 .

It is a cyclic number.

It is not a de Polignac number, because 53213245 - 2¹⁷ = 53082173 is a prime.

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, 5321320 + ... + 5321329.

It is an arithmetic number, because the mean of its divisors is an integer number (15963975).

Almost surely, 2^53213245 is an apocalyptic number.

It is an amenable number.

53213245 is a deficient number, since it is larger than the sum of its proper divisors (10642655).

53213245 is a wasteful number, since it uses less digits than its factorization.

53213245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642654.

The product of its digits is 3600, while the sum is 25.

The square root of 53213245 is about 7294.7409138365. The cubic root of 53213245 is about 376.1316806210.

The spelling of 53213245 in words is "fifty-three million, two hundred thirteen thousand, two hundred forty-five".