151530493 has 2 divisors, whose sum is σ = 151530494. Its totient is φ = 151530492.

The previous prime is 151530461. The next prime is 151530497. The reversal of 151530493 is 394035151.

It is a happy number.

151530493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99141849 + 52388644 = 9957^2 + 7238^2 .

It is a cyclic number.

It is not a de Polignac number, because 151530493 - 2⁵ = 151530461 is a prime.

It is a super-2 number, since 2×151530493² = 45922980617646098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151530497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75765246 + 75765247.

It is an arithmetic number, because the mean of its divisors is an integer number (75765247).

Almost surely, 2^151530493 is an apocalyptic number.

It is an amenable number.

151530493 is a deficient number, since it is larger than the sum of its proper divisors (1).

151530493 is an equidigital number, since it uses as much as digits as its factorization.

151530493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 151530493 is about 12309.7722562199. The cubic root of 151530493 is about 533.1302747383.

The spelling of 151530493 in words is "one hundred fifty-one million, five hundred thirty thousand, four hundred ninety-three".