145116521 has 8 divisors (see below), whose sum is σ = 159711264. Its totient is φ = 130755520.

The previous prime is 145116511. The next prime is 145116527. The reversal of 145116521 is 125611541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145116521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145116527) 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 7 ways as a sum of consecutive naturals, for example, 57131 + ... + 59616.

It is an arithmetic number, because the mean of its divisors is an integer number (19963908).

Almost surely, 2^145116521 is an apocalyptic number.

145116521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145116521 is a deficient number, since it is larger than the sum of its proper divisors (14594743).

145116521 is a wasteful number, since it uses less digits than its factorization.

145116521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116871.

The product of its digits is 1200, while the sum is 26.

The square root of 145116521 is about 12046.4318783613. The cubic root of 145116521 is about 525.4994744703.

The spelling of 145116521 in words is "one hundred forty-five million, one hundred sixteen thousand, five hundred twenty-one".