145500061 has 6 divisors (see below), whose sum is σ = 169255230. Its totient is φ = 124714296.

The previous prime is 145500029. The next prime is 145500071. The reversal of 145500061 is 160005541.

145500061 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 only one way, i.e., 138791961 + 6708100 = 11781^2 + 2590^2 .

It is not a de Polignac number, because 145500061 - 2⁵ = 145500029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145500011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1484646 + ... + 1484743.

It is an arithmetic number, because the mean of its divisors is an integer number (28209205).

Almost surely, 2^145500061 is an apocalyptic number.

It is an amenable number.

145500061 is a deficient number, since it is larger than the sum of its proper divisors (23755169).

145500061 is an equidigital number, since it uses as much as digits as its factorization.

145500061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969403 (or 2969396 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 145500061 is about 12062.3406103459. The cubic root of 145500061 is about 525.9620286603.

The spelling of 145500061 in words is "one hundred forty-five million, five hundred thousand, sixty-one".