152151493 has 8 divisors (see below), whose sum is σ = 164574200. Its totient is φ = 139831488.

The previous prime is 152151481. The next prime is 152151521. The reversal of 152151493 is 394151251.

It can be written as a sum of positive squares in 4 ways, for example, as 71115489 + 81036004 = 8433^2 + 9002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 152151493 - 2¹³ = 152143301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152151403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22578 + ... + 28531.

It is an arithmetic number, because the mean of its divisors is an integer number (20571775).

Almost surely, 2^152151493 is an apocalyptic number.

152151493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

152151493 is a deficient number, since it is larger than the sum of its proper divisors (12422707).

152151493 is a wasteful number, since it uses less digits than its factorization.

152151493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51351.

The product of its digits is 5400, while the sum is 31.

The square root of 152151493 is about 12334.9703282983. The cubic root of 152151493 is about 533.8575709491.

The spelling of 152151493 in words is "one hundred fifty-two million, one hundred fifty-one thousand, four hundred ninety-three".