145664101 has 4 divisors (see below), whose sum is σ = 158906304. Its totient is φ = 132421900.

The previous prime is 145664069. The next prime is 145664111. The reversal of 145664101 is 101466541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145664101 - 2⁵ = 145664069 is a prime.

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 145664101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145664111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6621085 + ... + 6621106.

It is an arithmetic number, because the mean of its divisors is an integer number (39726576).

Almost surely, 2^145664101 is an apocalyptic number.

145664101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145664101 is a deficient number, since it is larger than the sum of its proper divisors (13242203).

145664101 is a wasteful number, since it uses less digits than its factorization.

145664101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13242202.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 145664101 is about 12069.1383702400. The cubic root of 145664101 is about 526.1596148484.

The spelling of 145664101 in words is "one hundred forty-five million, six hundred sixty-four thousand, one hundred one".