82147154 has 4 divisors (see below), whose sum is σ = 123220734. Its totient is φ = 41073576.

The previous prime is 82147151. The next prime is 82147181. The reversal of 82147154 is 45174128.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53684929 + 28462225 = 7327^2 + 5335^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82147154.

It is not an unprimeable number, because it can be changed into a prime (82147151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20536787 + ... + 20536790.

Almost surely, 2^82147154 is an apocalyptic number.

82147154 is a deficient number, since it is larger than the sum of its proper divisors (41073580).

82147154 is a wasteful number, since it uses less digits than its factorization.

82147154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41073579.

The product of its digits is 8960, while the sum is 32.

The square root of 82147154 is about 9063.5067164978. The cubic root of 82147154 is about 434.7078745052.

The spelling of 82147154 in words is "eighty-two million, one hundred forty-seven thousand, one hundred fifty-four".