151279321 has 2 divisors, whose sum is σ = 151279322. Its totient is φ = 151279320.

The previous prime is 151279313. The next prime is 151279351. The reversal of 151279321 is 123972151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134304921 + 16974400 = 11589^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 151279321 - 2³ = 151279313 is a prime.

It is not a weakly prime, because it can be changed into another prime (151279301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75639660 + 75639661.

It is an arithmetic number, because the mean of its divisors is an integer number (75639661).

Almost surely, 2^151279321 is an apocalyptic number.

It is an amenable number.

151279321 is a deficient number, since it is larger than the sum of its proper divisors (1).

151279321 is an equidigital number, since it uses as much as digits as its factorization.

151279321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 31.

The square root of 151279321 is about 12299.5658866482. The cubic root of 151279321 is about 532.8355453854.

The spelling of 151279321 in words is "one hundred fifty-one million, two hundred seventy-nine thousand, three hundred twenty-one".