145702537 has 2 divisors, whose sum is σ = 145702538. Its totient is φ = 145702536.

The previous prime is 145702517. The next prime is 145702541. The reversal of 145702537 is 735207541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125081856 + 20620681 = 11184^2 + 4541^2 .

It is an emirp because it is prime and its reverse (735207541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145702537 is a prime.

It is not a weakly prime, because it can be changed into another prime (145702517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72851268 + 72851269.

It is an arithmetic number, because the mean of its divisors is an integer number (72851269).

Almost surely, 2^145702537 is an apocalyptic number.

It is an amenable number.

145702537 is a deficient number, since it is larger than the sum of its proper divisors (1).

145702537 is an equidigital number, since it uses as much as digits as its factorization.

145702537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 145702537 is about 12070.7305909792. The cubic root of 145702537 is about 526.2058895592.

The spelling of 145702537 in words is "one hundred forty-five million, seven hundred two thousand, five hundred thirty-seven".