145420522 has 16 divisors (see below), whose sum is σ = 240641352. Its totient is φ = 65479680.

The previous prime is 145420493. The next prime is 145420553. The reversal of 145420522 is 225024541.

145420522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 109432521 + 35988001 = 10461^2 + 5999^2 .

It is a super-2 number, since 2×145420522² = 42294256437504968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67143 + ... + 69274.

Almost surely, 2^145420522 is an apocalyptic number.

145420522 is a deficient number, since it is larger than the sum of its proper divisors (95220830).

145420522 is a wasteful number, since it uses less digits than its factorization.

145420522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136473.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 145420522 is about 12059.0431627057. The cubic root of 145420522 is about 525.8661704664.

The spelling of 145420522 in words is "one hundred forty-five million, four hundred twenty thousand, five hundred twenty-two".