145312157 has 2 divisors, whose sum is σ = 145312158. Its totient is φ = 145312156.

The previous prime is 145312067. The next prime is 145312199. The reversal of 145312157 is 751213541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132963961 + 12348196 = 11531^2 + 3514^2 .

It is a cyclic number.

It is not a de Polignac number, because 145312157 - 2¹⁸ = 145050013 is a prime.

It is a super-2 number, since 2×145312157² = 42231245943985298, which contains 22 as substring.

It is a zygodrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145312757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72656078 + 72656079.

It is an arithmetic number, because the mean of its divisors is an integer number (72656079).

Almost surely, 2^145312157 is an apocalyptic number.

It is an amenable number.

145312157 is a deficient number, since it is larger than the sum of its proper divisors (1).

145312157 is an equidigital number, since it uses as much as digits as its factorization.

145312157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 145312157 is about 12054.5492242555. The cubic root of 145312157 is about 525.7355157107.

Adding to 145312157 its reverse (751213541), we get a palindrome (896525698).

The spelling of 145312157 in words is "one hundred forty-five million, three hundred twelve thousand, one hundred fifty-seven".