151321055 has 4 divisors (see below), whose sum is σ = 181585272. Its totient is φ = 121056840.

The previous prime is 151321033. The next prime is 151321057. The reversal of 151321055 is 550123151.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 151321055 - 2⁶ = 151320991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151321055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151321057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15132101 + ... + 15132110.

It is an arithmetic number, because the mean of its divisors is an integer number (45396318).

Almost surely, 2^151321055 is an apocalyptic number.

151321055 is a deficient number, since it is larger than the sum of its proper divisors (30264217).

151321055 is an equidigital number, since it uses as much as digits as its factorization.

151321055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30264216.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 151321055 is about 12301.2623335981. The cubic root of 151321055 is about 532.8845393345.

The spelling of 151321055 in words is "one hundred fifty-one million, three hundred twenty-one thousand, fifty-five".