145254157 has 2 divisors, whose sum is σ = 145254158. Its totient is φ = 145254156.

The previous prime is 145254139. The next prime is 145254181. The reversal of 145254157 is 751452541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145226601 + 27556 = 12051^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 145254157 - 2⁷ = 145254029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145251157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72627078 + 72627079.

It is an arithmetic number, because the mean of its divisors is an integer number (72627079).

Almost surely, 2^145254157 is an apocalyptic number.

It is an amenable number.

145254157 is a deficient number, since it is larger than the sum of its proper divisors (1).

145254157 is an equidigital number, since it uses as much as digits as its factorization.

145254157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28000, while the sum is 34.

The square root of 145254157 is about 12052.1432533803. The cubic root of 145254157 is about 525.6655589170.

The spelling of 145254157 in words is "one hundred forty-five million, two hundred fifty-four thousand, one hundred fifty-seven".