145961229 has 8 divisors (see below), whose sum is σ = 194674752. Its totient is φ = 97277600.

The previous prime is 145961209. The next prime is 145961239. The reversal of 145961229 is 922169541.

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 145961229 - 2²³ = 137572621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145961209) 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, 9304 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (24334344).

Almost surely, 2^145961229 is an apocalyptic number.

It is an amenable number.

145961229 is a deficient number, since it is larger than the sum of its proper divisors (48713523).

145961229 is a wasteful number, since it uses less digits than its factorization.

145961229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14947.

The product of its digits is 38880, while the sum is 39.

The square root of 145961229 is about 12081.4415116740. The cubic root of 145961229 is about 526.5171281818.

The spelling of 145961229 in words is "one hundred forty-five million, nine hundred sixty-one thousand, two hundred twenty-nine".