151601493 has 4 divisors (see below), whose sum is σ = 202135328. Its totient is φ = 101067660.

The previous prime is 151601459. The next prime is 151601497. The reversal of 151601493 is 394106151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 151601493 - 2¹⁰ = 151600469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151601493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151601497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25266913 + ... + 25266918.

It is an arithmetic number, because the mean of its divisors is an integer number (50533832).

Almost surely, 2^151601493 is an apocalyptic number.

It is an amenable number.

151601493 is a deficient number, since it is larger than the sum of its proper divisors (50533835).

151601493 is an equidigital number, since it uses as much as digits as its factorization.

151601493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50533834.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 151601493 is about 12312.6558061208. The cubic root of 151601493 is about 533.2135282546.

It can be divided in two parts, 15160 and 1493, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 151601493 in words is "one hundred fifty-one million, six hundred one thousand, four hundred ninety-three".