145551706 has 16 divisors (see below), whose sum is σ = 221011560. Its totient is φ = 71884800.

The previous prime is 145551691. The next prime is 145551737. The reversal of 145551706 is 607155541.

145551706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 120099681 + 25452025 = 10959^2 + 5045^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154870 + ... + 155806.

Almost surely, 2^145551706 is an apocalyptic number.

145551706 is a deficient number, since it is larger than the sum of its proper divisors (75459854).

145551706 is a wasteful number, since it uses less digits than its factorization.

145551706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 145551706 is about 12064.4811740912. The cubic root of 145551706 is about 526.0242510758.

It can be divided in two parts, 14555 and 1706, that added together give a palindrome (16261).

The spelling of 145551706 in words is "one hundred forty-five million, five hundred fifty-one thousand, seven hundred six".