71540154 has 24 divisors (see below), whose sum is σ = 177147360. Its totient is φ = 20440008.

The previous prime is 71540153. The next prime is 71540159. The reversal of 71540154 is 45104517.

It is a happy number.

71540154 is a `hidden beast` number, since 71 + 540 + 1 + 54 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71540153) 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, 283764 + ... + 284015.

It is an arithmetic number, because the mean of its divisors is an integer number (7381140).

Almost surely, 2^71540154 is an apocalyptic number.

71540154 is an abundant number, since it is smaller than the sum of its proper divisors (105607206).

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

71540154 is a wasteful number, since it uses less digits than its factorization.

71540154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567794 (or 567791 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 71540154 is about 8458.1412851761. The cubic root of 71540154 is about 415.1292073608.

It can be divided in two parts, 71 and 540154, that added together give a square (540225 = 735²).

The spelling of 71540154 in words is "seventy-one million, five hundred forty thousand, one hundred fifty-four".