145729061 has 4 divisors (see below), whose sum is σ = 148118124. Its totient is φ = 143340000.

The previous prime is 145729057. The next prime is 145729063. The reversal of 145729061 is 160927541.

145729061 is digitally balanced in base 2, because in such base 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 2 ways, for example, as 6630625 + 139098436 = 2575^2 + 11794^2 .

It is a cyclic number.

It is not a de Polignac number, because 145729061 - 2² = 145729057 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 (145729063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194440 + ... + 1194561.

It is an arithmetic number, because the mean of its divisors is an integer number (37029531).

Almost surely, 2^145729061 is an apocalyptic number.

It is an amenable number.

145729061 is a deficient number, since it is larger than the sum of its proper divisors (2389063).

145729061 is an equidigital number, since it uses as much as digits as its factorization.

145729061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389062.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 145729061 is about 12071.8292317279. The cubic root of 145729061 is about 526.2378181686.

The spelling of 145729061 in words is "one hundred forty-five million, seven hundred twenty-nine thousand, sixty-one".