151001261 has 2 divisors, whose sum is σ = 151001262. Its totient is φ = 151001260.

The previous prime is 151001239. The next prime is 151001273. The reversal of 151001261 is 162100151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 32844361 = 10870^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 151001261 - 2¹⁴ = 150984877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151007261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75500630 + 75500631.

It is an arithmetic number, because the mean of its divisors is an integer number (75500631).

Almost surely, 2^151001261 is an apocalyptic number.

It is an amenable number.

151001261 is a deficient number, since it is larger than the sum of its proper divisors (1).

151001261 is an equidigital number, since it uses as much as digits as its factorization.

151001261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 151001261 is about 12288.2570366997. The cubic root of 151001261 is about 532.5088844793.

It can be divided in two parts, 15100 and 1261, that added together give a palindrome (16361).

The spelling of 151001261 in words is "one hundred fifty-one million, one thousand, two hundred sixty-one".