155051983 has 2 divisors, whose sum is σ = 155051984. Its totient is φ = 155051982.

The previous prime is 155051969. The next prime is 155051999. The reversal of 155051983 is 389150551.

It is a weak prime.

It is an emirp because it is prime and its reverse (389150551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155051983 - 2⁹ = 155051471 is a prime.

It is a super-2 number, since 2×155051983² = 48082234864464578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155051903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77525991 + 77525992.

It is an arithmetic number, because the mean of its divisors is an integer number (77525992).

Almost surely, 2^155051983 is an apocalyptic number.

155051983 is a deficient number, since it is larger than the sum of its proper divisors (1).

155051983 is an equidigital number, since it uses as much as digits as its factorization.

155051983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 37.

The square root of 155051983 is about 12451.9871104977. The cubic root of 155051983 is about 537.2285796040.

The spelling of 155051983 in words is "one hundred fifty-five million, fifty-one thousand, nine hundred eighty-three".