145955091 has 8 divisors (see below), whose sum is σ = 196092864. Its totient is φ = 96560360.

The previous prime is 145955077. The next prime is 145955101. The reversal of 145955091 is 190559541.

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 145955091 - 2¹⁸ = 145692947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145955021) 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, 185301 + ... + 186086.

It is an arithmetic number, because the mean of its divisors is an integer number (24511608).

Almost surely, 2^145955091 is an apocalyptic number.

145955091 is a deficient number, since it is larger than the sum of its proper divisors (50137773).

145955091 is a wasteful number, since it uses less digits than its factorization.

145955091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371521.

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 145955091 is about 12081.1874830250. The cubic root of 145955091 is about 526.5097476661.

The spelling of 145955091 in words is "one hundred forty-five million, nine hundred fifty-five thousand, ninety-one".