26522139 has 16 divisors (see below), whose sum is σ = 40493312. Its totient is φ = 15126048.

The previous prime is 26522137. The next prime is 26522161. The reversal of 26522139 is 93122562.

It is not a de Polignac number, because 26522139 - 2¹ = 26522137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26522131) 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, 14532 + ... + 16254.

It is an arithmetic number, because the mean of its divisors is an integer number (2530832).

Almost surely, 2^26522139 is an apocalyptic number.

26522139 is a deficient number, since it is larger than the sum of its proper divisors (13971173).

26522139 is a wasteful number, since it uses less digits than its factorization.

26522139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its digits is 6480, while the sum is 30.

The square root of 26522139 is about 5149.9649513370. The cubic root of 26522139 is about 298.2195992572.

The spelling of 26522139 in words is "twenty-six million, five hundred twenty-two thousand, one hundred thirty-nine".