145523061 has 10 divisors (see below), whose sum is σ = 217386422. Its totient is φ = 97015320.

The previous prime is 145523041. The next prime is 145523069. The reversal of 145523061 is 160325541.

It can be written as a sum of positive squares in only one way, i.e., 119574225 + 25948836 = 10935^2 + 5094^2 .

It is not a de Polignac number, because 145523061 - 2⁵ = 145523029 is a prime.

It is a super-2 number, since 2×145523061² = 42353922565619442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523069) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 898210 + ... + 898371.

Almost surely, 2^145523061 is an apocalyptic number.

It is an amenable number.

145523061 is a deficient number, since it is larger than the sum of its proper divisors (71863361).

145523061 is an equidigital number, since it uses as much as digits as its factorization.

145523061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796593 (or 1796584 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 145523061 is about 12063.2939531456. The cubic root of 145523061 is about 525.9897411098.

The spelling of 145523061 in words is "one hundred forty-five million, five hundred twenty-three thousand, sixty-one".