146521441 has 6 divisors (see below), whose sum is σ = 161052626. Its totient is φ = 133201200.

The previous prime is 146521433. The next prime is 146521457. The reversal of 146521441 is 144125641.

It can be written as a sum of positive squares in only one way, i.e., 141134400 + 5387041 = 11880^2 + 2321^2 .

It is not a de Polignac number, because 146521441 - 2³ = 146521433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146521411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605340 + ... + 605581.

Almost surely, 2^146521441 is an apocalyptic number.

146521441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146521441 is a deficient number, since it is larger than the sum of its proper divisors (14531185).

146521441 is a wasteful number, since it uses less digits than its factorization.

146521441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210943 (or 1210932 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 146521441 is about 12104.6041240513. The cubic root of 146521441 is about 527.1898745353.

The spelling of 146521441 in words is "one hundred forty-six million, five hundred twenty-one thousand, four hundred forty-one".