151531541 has 4 divisors (see below), whose sum is σ = 173178912. Its totient is φ = 129884172.

The previous prime is 151531519. The next prime is 151531577. The reversal of 151531541 is 145135151.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151531541 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 151531541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151531141) 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, 10823675 + ... + 10823688.

It is an arithmetic number, because the mean of its divisors is an integer number (43294728).

Almost surely, 2^151531541 is an apocalyptic number.

It is an amenable number.

151531541 is a deficient number, since it is larger than the sum of its proper divisors (21647371).

151531541 is an equidigital number, since it uses as much as digits as its factorization.

151531541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21647370.

The product of its digits is 1500, while the sum is 26.

The square root of 151531541 is about 12309.8148239525. The cubic root of 151531541 is about 533.1315037961.

Adding to 151531541 its reverse (145135151), we get a palindrome (296666692).

The spelling of 151531541 in words is "one hundred fifty-one million, five hundred thirty-one thousand, five hundred forty-one".