29138537 has 4 divisors (see below), whose sum is σ = 29151060. Its totient is φ = 29126016.

The previous prime is 29138531. The next prime is 29138567. The reversal of 29138537 is 73583192.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 23921881 + 5216656 = 4891^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 29138537 - 2²² = 24944233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29138537.

It is not an unprimeable number, because it can be changed into a prime (29138531) 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, 1628 + ... + 7805.

It is an arithmetic number, because the mean of its divisors is an integer number (7287765).

Almost surely, 2^29138537 is an apocalyptic number.

It is an amenable number.

29138537 is a deficient number, since it is larger than the sum of its proper divisors (12523).

29138537 is an equidigital number, since it uses as much as digits as its factorization.

29138537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12522.

The product of its digits is 45360, while the sum is 38.

The square root of 29138537 is about 5398.0123193635. The cubic root of 29138537 is about 307.7201349656.

The spelling of 29138537 in words is "twenty-nine million, one hundred thirty-eight thousand, five hundred thirty-seven".