151649441 has 2 divisors, whose sum is σ = 151649442. Its totient is φ = 151649440.

The previous prime is 151649389. The next prime is 151649473. The reversal of 151649441 is 144946151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148742416 + 2907025 = 12196^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 151649441 - 2¹⁰ = 151648417 is a prime.

It is a super-2 number, since 2×151649441² = 45995105911224962, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151649041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75824720 + 75824721.

It is an arithmetic number, because the mean of its divisors is an integer number (75824721).

Almost surely, 2^151649441 is an apocalyptic number.

It is an amenable number.

151649441 is a deficient number, since it is larger than the sum of its proper divisors (1).

151649441 is an equidigital number, since it uses as much as digits as its factorization.

151649441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 151649441 is about 12314.6027544538. The cubic root of 151649441 is about 533.2697366442.

The spelling of 151649441 in words is "one hundred fifty-one million, six hundred forty-nine thousand, four hundred forty-one".