145902157 has 2 divisors, whose sum is σ = 145902158. Its totient is φ = 145902156.

The previous prime is 145902073. The next prime is 145902173. The reversal of 145902157 is 751209541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141633801 + 4268356 = 11901^2 + 2066^2 .

It is an emirp because it is prime and its reverse (751209541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145902157 - 2¹⁵ = 145869389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145902187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951078 + 72951079.

It is an arithmetic number, because the mean of its divisors is an integer number (72951079).

Almost surely, 2^145902157 is an apocalyptic number.

It is an amenable number.

145902157 is a deficient number, since it is larger than the sum of its proper divisors (1).

145902157 is an equidigital number, since it uses as much as digits as its factorization.

145902157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 145902157 is about 12078.9965228905. The cubic root of 145902157 is about 526.4460896447.

The spelling of 145902157 in words is "one hundred forty-five million, nine hundred two thousand, one hundred fifty-seven".