145146261 has 32 divisors (see below), whose sum is σ = 219727872. Its totient is φ = 84553920.

The previous prime is 145146259. The next prime is 145146269. The reversal of 145146261 is 162641541.

It is not a de Polignac number, because 145146261 - 2¹ = 145146259 is a prime.

It is a super-3 number, since 3×145146261³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145146269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91606 + ... + 93176.

It is an arithmetic number, because the mean of its divisors is an integer number (6866496).

Almost surely, 2^145146261 is an apocalyptic number.

It is an amenable number.

145146261 is a deficient number, since it is larger than the sum of its proper divisors (74581611).

145146261 is a wasteful number, since it uses less digits than its factorization.

145146261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its digits is 5760, while the sum is 30.

The square root of 145146261 is about 12047.6662055354. Note that the first 3 decimals coincide. The cubic root of 145146261 is about 525.5353704220.

The spelling of 145146261 in words is "one hundred forty-five million, one hundred forty-six thousand, two hundred sixty-one".