150121537 has 2 divisors, whose sum is σ = 150121538. Its totient is φ = 150121536.

The previous prime is 150121513. The next prime is 150121571. The reversal of 150121537 is 735121051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149597361 + 524176 = 12231^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 150121537 - 2¹⁵ = 150088769 is a prime.

It is not a weakly prime, because it can be changed into another prime (150121597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75060768 + 75060769.

It is an arithmetic number, because the mean of its divisors is an integer number (75060769).

Almost surely, 2^150121537 is an apocalyptic number.

It is an amenable number.

150121537 is a deficient number, since it is larger than the sum of its proper divisors (1).

150121537 is an equidigital number, since it uses as much as digits as its factorization.

150121537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 150121537 is about 12252.4094365149. The cubic root of 150121537 is about 531.4727484452.

Adding to 150121537 its reverse (735121051), we get a palindrome (885242588).

The spelling of 150121537 in words is "one hundred fifty million, one hundred twenty-one thousand, five hundred thirty-seven".