154772555481 has 12 divisors (see below), whose sum is σ = 223564421652. Its totient is φ = 103179828096.

The previous prime is 154772555419. The next prime is 154772555491. The reversal of 154772555481 is 184555277451.

154772555481 is a `hidden beast` number, since 1 + 5 + 4 + 7 + 7 + 2 + 5 + 554 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 145744515225 + 9028040256 = 381765^2 + 95016^2 .

It is not a de Polignac number, because 154772555481 - 2¹⁷ = 154772424409 is a prime.

It is a super-2 number, since 2×154772555481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154772555491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 520645 + ... + 761981.

It is an arithmetic number, because the mean of its divisors is an integer number (18630368471).

Almost surely, 2^154772555481 is an apocalyptic number.

It is an amenable number.

154772555481 is a deficient number, since it is larger than the sum of its proper divisors (68791866171).

154772555481 is a wasteful number, since it uses less digits than its factorization.

154772555481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312600 (or 312597 counting only the distinct ones).

The product of its digits is 7840000, while the sum is 54.

The spelling of 154772555481 in words is "one hundred fifty-four billion, seven hundred seventy-two million, five hundred fifty-five thousand, four hundred eighty-one".