151214681 has 2 divisors, whose sum is σ = 151214682. Its totient is φ = 151214680.

The previous prime is 151214653. The next prime is 151214689. The reversal of 151214681 is 186412151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148840000 + 2374681 = 12200^2 + 1541^2 .

It is an emirp because it is prime and its reverse (186412151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151214681 is a prime.

It is a super-2 number, since 2×151214681² = 45731759499863522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151214689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75607340 + 75607341.

It is an arithmetic number, because the mean of its divisors is an integer number (75607341).

Almost surely, 2^151214681 is an apocalyptic number.

It is an amenable number.

151214681 is a deficient number, since it is larger than the sum of its proper divisors (1).

151214681 is an equidigital number, since it uses as much as digits as its factorization.

151214681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 29.

The square root of 151214681 is about 12296.9378708685. The cubic root of 151214681 is about 532.7596429725.

The spelling of 151214681 in words is "one hundred fifty-one million, two hundred fourteen thousand, six hundred eighty-one".