49151231 has 2 divisors, whose sum is σ = 49151232. Its totient is φ = 49151230.

The previous prime is 49151197. The next prime is 49151243. The reversal of 49151231 is 13215194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49151231 - 2¹⁴ = 49134847 is a prime.

It is a super-2 number, since 2×49151231² = 4831687017630722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49151231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49151731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24575615 + 24575616.

It is an arithmetic number, because the mean of its divisors is an integer number (24575616).

Almost surely, 2^49151231 is an apocalyptic number.

49151231 is a deficient number, since it is larger than the sum of its proper divisors (1).

49151231 is an equidigital number, since it uses as much as digits as its factorization.

49151231 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 49151231 is about 7010.7938922778. The cubic root of 49151231 is about 366.3066472658.

The spelling of 49151231 in words is "forty-nine million, one hundred fifty-one thousand, two hundred thirty-one".