138051477 has 24 divisors (see below), whose sum is σ = 207717120. Its totient is φ = 88270560.

The previous prime is 138051437. The next prime is 138051481. The reversal of 138051477 is 774150831.

138051477 is a `hidden beast` number, since 138 + 0 + 51 + 477 = 666.

It is not a de Polignac number, because 138051477 - 2¹⁰ = 138050453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138051427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20724 + ... + 26562.

It is an arithmetic number, because the mean of its divisors is an integer number (8654880).

Almost surely, 2^138051477 is an apocalyptic number.

It is an amenable number.

138051477 is a deficient number, since it is larger than the sum of its proper divisors (69665643).

138051477 is a wasteful number, since it uses less digits than its factorization.

138051477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953 (or 5950 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 138051477 is about 11749.5309268072. The cubic root of 138051477 is about 516.8291720989.

The spelling of 138051477 in words is "one hundred thirty-eight million, fifty-one thousand, four hundred seventy-seven".