145325557 has 8 divisors (see below), whose sum is σ = 157073336. Its totient is φ = 133659072.

The previous prime is 145325513. The next prime is 145325561. The reversal of 145325557 is 755523541.

It can be written as a sum of positive squares in 4 ways, for example, as 11553201 + 133772356 = 3399^2 + 11566^2 .

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 145325557 - 2⁷ = 145325429 is a prime.

It is a super-2 number, since 2×145325557² = 42239035034720498, 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 (145325507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16578 + ... + 23779.

It is an arithmetic number, because the mean of its divisors is an integer number (19634167).

Almost surely, 2^145325557 is an apocalyptic number.

It is an amenable number.

145325557 is a deficient number, since it is larger than the sum of its proper divisors (11747779).

145325557 is a wasteful number, since it uses less digits than its factorization.

145325557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40647.

The product of its digits is 105000, while the sum is 37.

The square root of 145325557 is about 12055.1050182070. The cubic root of 145325557 is about 525.7516754951.

The spelling of 145325557 in words is "one hundred forty-five million, three hundred twenty-five thousand, five hundred fifty-seven".