151106621 has 2 divisors, whose sum is σ = 151106622. Its totient is φ = 151106620.

The previous prime is 151106597. The next prime is 151106623. The reversal of 151106621 is 126601151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 34164025 = 10814^2 + 5845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151106621 is a prime.

Together with 151106623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151106623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75553310 + 75553311.

It is an arithmetic number, because the mean of its divisors is an integer number (75553311).

Almost surely, 2^151106621 is an apocalyptic number.

It is an amenable number.

151106621 is a deficient number, since it is larger than the sum of its proper divisors (1).

151106621 is an equidigital number, since it uses as much as digits as its factorization.

151106621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 151106621 is about 12292.5433088519. The cubic root of 151106621 is about 532.6327070482.

Adding to 151106621 its reverse (126601151), we get a palindrome (277707772).

The spelling of 151106621 in words is "one hundred fifty-one million, one hundred six thousand, six hundred twenty-one".