152861906 has 4 divisors (see below), whose sum is σ = 229292862. Its totient is φ = 76430952.

The previous prime is 152861903. The next prime is 152861923. The reversal of 152861906 is 609168251.

152861906 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 94965025 + 57896881 = 9745^2 + 7609^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 152861906.

It is not an unprimeable number, because it can be changed into a prime (152861903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38215475 + ... + 38215478.

Almost surely, 2^152861906 is an apocalyptic number.

152861906 is a deficient number, since it is larger than the sum of its proper divisors (76430956).

152861906 is an equidigital number, since it uses as much as digits as its factorization.

152861906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76430955.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 152861906 is about 12363.7334976131. The cubic root of 152861906 is about 534.6871621431.

The spelling of 152861906 in words is "one hundred fifty-two million, eight hundred sixty-one thousand, nine hundred six".