145565719 has 8 divisors (see below), whose sum is σ = 159721632. Its totient is φ = 131832480.

The previous prime is 145565711. The next prime is 145565729. The reversal of 145565719 is 917565541.

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

It is not a de Polignac number, because 145565719 - 2³ = 145565711 is a prime.

It is a super-5 number, since 5×145565719⁵ (a number of 42 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145565711) 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, 104947 + ... + 106324.

It is an arithmetic number, because the mean of its divisors is an integer number (19965204).

Almost surely, 2^145565719 is an apocalyptic number.

145565719 is a deficient number, since it is larger than the sum of its proper divisors (14155913).

145565719 is a wasteful number, since it uses less digits than its factorization.

145565719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211337.

The product of its digits is 189000, while the sum is 43.

The square root of 145565719 is about 12065.0619144702. The cubic root of 145565719 is about 526.0411315405.

The spelling of 145565719 in words is "one hundred forty-five million, five hundred sixty-five thousand, seven hundred nineteen".