145202291 has 8 divisors (see below), whose sum is σ = 156637824. Its totient is φ = 133804800.

The previous prime is 145202273. The next prime is 145202341. The reversal of 145202291 is 192202541.

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 145202291 - 2⁶ = 145202227 is a prime.

It is a super-4 number, since 4×145202291⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145202291.

It is not an unprimeable number, because it can be changed into a prime (145202221) 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, 1310 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (19579728).

Almost surely, 2^145202291 is an apocalyptic number.

145202291 is a deficient number, since it is larger than the sum of its proper divisors (11435533).

145202291 is a wasteful number, since it uses less digits than its factorization.

145202291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19021.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 145202291 is about 12049.9913277977. The cubic root of 145202291 is about 525.6029848832.

The spelling of 145202291 in words is "one hundred forty-five million, two hundred two thousand, two hundred ninety-one".