146253621 has 16 divisors (see below), whose sum is σ = 210045440. Its totient is φ = 90221040.

The previous prime is 146253607. The next prime is 146253631. The reversal of 146253621 is 126352641.

It is not a de Polignac number, because 146253621 - 2⁵ = 146253589 is a prime.

It is a super-2 number, since 2×146253621² = 42780243311223282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146253631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27385 + ... + 32286.

It is an arithmetic number, because the mean of its divisors is an integer number (13127840).

Almost surely, 2^146253621 is an apocalyptic number.

It is an amenable number.

146253621 is a deficient number, since it is larger than the sum of its proper divisors (63791819).

146253621 is a wasteful number, since it uses less digits than its factorization.

146253621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59736.

The product of its digits is 8640, while the sum is 30.

The square root of 146253621 is about 12093.5363314458. The cubic root of 146253621 is about 526.8684696840.

The spelling of 146253621 in words is "one hundred forty-six million, two hundred fifty-three thousand, six hundred twenty-one".