145358257 has 8 divisors (see below), whose sum is σ = 160745760. Its totient is φ = 130332960.

The previous prime is 145358221. The next prime is 145358267. The reversal of 145358257 is 752853541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145358257 is a prime.

It is a super-2 number, since 2×145358257² = 42258045756156098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145358207) 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, 89707 + ... + 91312.

It is an arithmetic number, because the mean of its divisors is an integer number (20093220).

Almost surely, 2^145358257 is an apocalyptic number.

It is an amenable number.

145358257 is a deficient number, since it is larger than the sum of its proper divisors (15387503).

145358257 is a wasteful number, since it uses less digits than its factorization.

145358257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181103.

The product of its digits is 168000, while the sum is 40.

The square root of 145358257 is about 12056.4612138056. The cubic root of 145358257 is about 525.7911060234.

The spelling of 145358257 in words is "one hundred forty-five million, three hundred fifty-eight thousand, two hundred fifty-seven".