145098545 has 4 divisors (see below), whose sum is σ = 174118260. Its totient is φ = 116078832.

The previous prime is 145098533. The next prime is 145098557. The reversal of 145098545 is 545890541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545890541 = 7 ⋅77984363.

It is an interprime number because it is at equal distance from previous prime (145098533) and next prime (145098557).

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 69338929 = 8704^2 + 8327^2 .

It is a cyclic number.

It is not a de Polignac number, because 145098545 - 2⁴ = 145098529 is a prime.

It is a super-2 number, since 2×145098545² = 42107175522234050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14509850 + ... + 14509859.

It is an arithmetic number, because the mean of its divisors is an integer number (43529565).

Almost surely, 2^145098545 is an apocalyptic number.

It is an amenable number.

145098545 is a deficient number, since it is larger than the sum of its proper divisors (29019715).

145098545 is an equidigital number, since it uses as much as digits as its factorization.

145098545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29019714.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 145098545 is about 12045.6857422066. The cubic root of 145098545 is about 525.4777751982.

The spelling of 145098545 in words is "one hundred forty-five million, ninety-eight thousand, five hundred forty-five".