151530121 has 8 divisors (see below), whose sum is σ = 152659080. Its totient is φ = 150405888.

The previous prime is 151530107. The next prime is 151530157. The reversal of 151530121 is 121035151.

It can be written as a sum of positive squares in 4 ways, for example, as 2958400 + 148571721 = 1720^2 + 12189^2 .

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 151530121 - 2¹¹ = 151528073 is a prime.

It is a super-2 number, since 2×151530121² = 45922755140549282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151530101) 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, 84385 + ... + 86161.

It is an arithmetic number, because the mean of its divisors is an integer number (19082385).

Almost surely, 2^151530121 is an apocalyptic number.

It is an amenable number.

151530121 is a deficient number, since it is larger than the sum of its proper divisors (1128959).

151530121 is a wasteful number, since it uses less digits than its factorization.

151530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 151530121 is about 12309.7571462641. The cubic root of 151530121 is about 533.1298384683.

Adding to 151530121 its reverse (121035151), we get a palindrome (272565272).

The spelling of 151530121 in words is "one hundred fifty-one million, five hundred thirty thousand, one hundred twenty-one".