155312002 has 4 divisors (see below), whose sum is σ = 232968006. Its totient is φ = 77656000.

The previous prime is 155311993. The next prime is 155312011. The reversal of 155312002 is 200213551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200213551 = 23 ⋅8704937.

It is an interprime number because it is at equal distance from previous prime (155311993) and next prime (155312011).

It can be written as a sum of positive squares in only one way, i.e., 128799801 + 26512201 = 11349^2 + 5149^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38827999 + ... + 38828002.

Almost surely, 2^155312002 is an apocalyptic number.

155312002 is a deficient number, since it is larger than the sum of its proper divisors (77656004).

155312002 is an equidigital number, since it uses as much as digits as its factorization.

155312002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77656003.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 155312002 is about 12462.4236005682. The cubic root of 155312002 is about 537.5287189991.

Adding to 155312002 its reverse (200213551), we get a palindrome (355525553).

The spelling of 155312002 in words is "one hundred fifty-five million, three hundred twelve thousand, two".