151961251 has 6 divisors (see below), whose sum is σ = 164549940. Its totient is φ = 140271768.

The previous prime is 151961239. The next prime is 151961261. The reversal of 151961251 is 152169151.

It is not a de Polignac number, because 151961251 - 2¹⁹ = 151436963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151961261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 449421 + ... + 449758.

It is an arithmetic number, because the mean of its divisors is an integer number (27424990).

Almost surely, 2^151961251 is an apocalyptic number.

151961251 is a deficient number, since it is larger than the sum of its proper divisors (12588689).

151961251 is an equidigital number, since it uses as much as digits as its factorization.

151961251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899205 (or 899192 counting only the distinct ones).

The product of its digits is 2700, while the sum is 31.

The square root of 151961251 is about 12327.2564263100. The cubic root of 151961251 is about 533.6349759360.

The spelling of 151961251 in words is "one hundred fifty-one million, nine hundred sixty-one thousand, two hundred fifty-one".