145250661 has 8 divisors (see below), whose sum is σ = 194651424. Its totient is φ = 96341840.

The previous prime is 145250653. The next prime is 145250683. The reversal of 145250661 is 166052541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145250661 - 2³ = 145250653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145252661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122295 + ... + 123476.

It is an arithmetic number, because the mean of its divisors is an integer number (24331428).

Almost surely, 2^145250661 is an apocalyptic number.

It is an amenable number.

145250661 is a deficient number, since it is larger than the sum of its proper divisors (49400763).

145250661 is a wasteful number, since it uses less digits than its factorization.

145250661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245971.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 145250661 is about 12051.9982160636. The cubic root of 145250661 is about 525.6613416160.

The spelling of 145250661 in words is "one hundred forty-five million, two hundred fifty thousand, six hundred sixty-one".