52729215 has 64 divisors (see below), whose sum is σ = 106831872. Its totient is φ = 21571200.

The previous prime is 52729177. The next prime is 52729219. The reversal of 52729215 is 51292725.

It is a happy number.

It is not a de Polignac number, because 52729215 - 2¹¹ = 52727167 is a prime.

It is a super-2 number, since 2×52729215² = 5560740229032450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52729219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81684 + ... + 82326.

It is an arithmetic number, because the mean of its divisors is an integer number (1669248).

Almost surely, 2^52729215 is an apocalyptic number.

52729215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

52729215 is an abundant number, since it is smaller than the sum of its proper divisors (54102657).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52729215 is a wasteful number, since it uses less digits than its factorization.

52729215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740.

The product of its digits is 12600, while the sum is 33.

The square root of 52729215 is about 7261.4884837752. The cubic root of 52729215 is about 374.9877684899.

The spelling of 52729215 in words is "fifty-two million, seven hundred twenty-nine thousand, two hundred fifteen".