145702481 has 8 divisors (see below), whose sum is σ = 146999400. Its totient is φ = 144410112.

The previous prime is 145702477. The next prime is 145702489. The reversal of 145702481 is 184207541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22137025 + 123565456 = 4705^2 + 11116^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145702481 - 2² = 145702477 is a prime.

It is a super-2 number, since 2×145702481² = 42458425939110722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145702489) 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, 99551 + ... + 101003.

It is an arithmetic number, because the mean of its divisors is an integer number (18374925).

Almost surely, 2^145702481 is an apocalyptic number.

It is an amenable number.

145702481 is a deficient number, since it is larger than the sum of its proper divisors (1296919).

145702481 is a wasteful number, since it uses less digits than its factorization.

145702481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 145702481 is about 12070.7282713182. The cubic root of 145702481 is about 526.2058221444.

The spelling of 145702481 in words is "one hundred forty-five million, seven hundred two thousand, four hundred eighty-one".