145985701 has 4 divisors (see below), whose sum is σ = 146010592. Its totient is φ = 145960812.

The previous prime is 145985699. The next prime is 145985729. The reversal of 145985701 is 107589541.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 107589541 = 4463 ⋅24107.

It is a cyclic number.

It is not a de Polignac number, because 145985701 - 2¹ = 145985699 is a prime.

It is a super-3 number, since 3×145985701³ (a number of 25 digits) contains 333 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 (145983701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (36502648).

Almost surely, 2^145985701 is an apocalyptic number.

It is an amenable number.

145985701 is a deficient number, since it is larger than the sum of its proper divisors (24891).

145985701 is an equidigital number, since it uses as much as digits as its factorization.

145985701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24890.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 145985701 is about 12082.4542622764. The cubic root of 145985701 is about 526.5465519935.

The spelling of 145985701 in words is "one hundred forty-five million, nine hundred eighty-five thousand, seven hundred one".