151251649 has 2 divisors, whose sum is σ = 151251650. Its totient is φ = 151251648.

The previous prime is 151251643. The next prime is 151251677. The reversal of 151251649 is 946152151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82029249 + 69222400 = 9057^2 + 8320^2 .

It is a cyclic number.

It is not a de Polignac number, because 151251649 - 2⁹ = 151251137 is a prime.

It is a super-2 number, since 2×151251649² = 45754122650438402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151251643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75625824 + 75625825.

It is an arithmetic number, because the mean of its divisors is an integer number (75625825).

Almost surely, 2^151251649 is an apocalyptic number.

It is an amenable number.

151251649 is a deficient number, since it is larger than the sum of its proper divisors (1).

151251649 is an equidigital number, since it uses as much as digits as its factorization.

151251649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 151251649 is about 12298.4409174497. The cubic root of 151251649 is about 532.8030546607.

The spelling of 151251649 in words is "one hundred fifty-one million, two hundred fifty-one thousand, six hundred forty-nine".