138522054 has 32 divisors (see below), whose sum is σ = 315373824. Its totient is φ = 40150880.

The previous prime is 138522047. The next prime is 138522061. The reversal of 138522054 is 450225831.

It is an interprime number because it is at equal distance from previous prime (138522047) and next prime (138522061).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44109 + ... + 47144.

It is an arithmetic number, because the mean of its divisors is an integer number (9855432).

Almost surely, 2^138522054 is an apocalyptic number.

138522054 is an abundant number, since it is smaller than the sum of its proper divisors (176851770).

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

138522054 is a wasteful number, since it uses less digits than its factorization.

138522054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91292.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 138522054 is about 11769.5392433179. The cubic root of 138522054 is about 517.4157458110.

Adding to 138522054 its reverse (450225831), we get a palindrome (588747885).

The spelling of 138522054 in words is "one hundred thirty-eight million, five hundred twenty-two thousand, fifty-four".