145179261 has 12 divisors (see below), whose sum is σ = 212576988. Its totient is φ = 95459904.

The previous prime is 145179257. The next prime is 145179277. The reversal of 145179261 is 162971541.

145179261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56160036 + 89019225 = 7494^2 + 9435^2 .

It is not a de Polignac number, because 145179261 - 2² = 145179257 is a prime.

It is a super-2 number, since 2×145179261² = 42154035649012242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145171261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109830 + ... + 111143.

It is an arithmetic number, because the mean of its divisors is an integer number (17714749).

Almost surely, 2^145179261 is an apocalyptic number.

It is an amenable number.

145179261 is a deficient number, since it is larger than the sum of its proper divisors (67397727).

145179261 is a wasteful number, since it uses less digits than its factorization.

145179261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221052 (or 221049 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 145179261 is about 12049.0356875561. The cubic root of 145179261 is about 525.5751954301.

The spelling of 145179261 in words is "one hundred forty-five million, one hundred seventy-nine thousand, two hundred sixty-one".