151554121 has 2 divisors, whose sum is σ = 151554122. Its totient is φ = 151554120.

The previous prime is 151554119. The next prime is 151554149. The reversal of 151554121 is 121455151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144264121 + 7290000 = 12011^2 + 2700^2 .

It is an emirp because it is prime and its reverse (121455151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151554121 - 2¹ = 151554119 is a prime.

Together with 151554119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (151554101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75777060 + 75777061.

It is an arithmetic number, because the mean of its divisors is an integer number (75777061).

Almost surely, 2^151554121 is an apocalyptic number.

It is an amenable number.

151554121 is a deficient number, since it is larger than the sum of its proper divisors (1).

151554121 is an equidigital number, since it uses as much as digits as its factorization.

151554121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000, while the sum is 25.

The square root of 151554121 is about 12310.7319441210. The cubic root of 151554121 is about 533.1579834570.

The spelling of 151554121 in words is "one hundred fifty-one million, five hundred fifty-four thousand, one hundred twenty-one".