53438217 has 16 divisors (see below), whose sum is σ = 81607680. Its totient is φ = 30469392.

The previous prime is 53438183. The next prime is 53438243. The reversal of 53438217 is 71283435.

It is not a de Polignac number, because 53438217 - 2¹¹ = 53436169 is a prime.

It is a super-2 number, since 2×53438217² = 5711286072278178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53418217) 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, 8034 + ... + 13092.

It is an arithmetic number, because the mean of its divisors is an integer number (5100480).

Almost surely, 2^53438217 is an apocalyptic number.

It is an amenable number.

53438217 is a deficient number, since it is larger than the sum of its proper divisors (28169463).

53438217 is a wasteful number, since it uses less digits than its factorization.

53438217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572.

The product of its digits is 20160, while the sum is 33.

The square root of 53438217 is about 7310.1448002074. The cubic root of 53438217 is about 376.6609982527.

The spelling of 53438217 in words is "fifty-three million, four hundred thirty-eight thousand, two hundred seventeen".