151361621 has 2 divisors, whose sum is σ = 151361622. Its totient is φ = 151361620.

The previous prime is 151361611. The next prime is 151361641. The reversal of 151361621 is 126163151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122899396 + 28462225 = 11086^2 + 5335^2 .

It is a cyclic number.

It is not a de Polignac number, because 151361621 - 2¹⁰ = 151360597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151361611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75680810 + 75680811.

It is an arithmetic number, because the mean of its divisors is an integer number (75680811).

Almost surely, 2^151361621 is an apocalyptic number.

It is an amenable number.

151361621 is a deficient number, since it is larger than the sum of its proper divisors (1).

151361621 is an equidigital number, since it uses as much as digits as its factorization.

151361621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 151361621 is about 12302.9110782774. The cubic root of 151361621 is about 532.9321534682.

The spelling of 151361621 in words is "one hundred fifty-one million, three hundred sixty-one thousand, six hundred twenty-one".