155008957 has 4 divisors (see below), whose sum is σ = 155113056. Its totient is φ = 154904860.

The previous prime is 155008951. The next prime is 155008963. The reversal of 155008957 is 759800551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759800551 = 29 ⋅26200019.

It is an interprime number because it is at equal distance from previous prime (155008951) and next prime (155008963).

It is a cyclic number.

It is not a de Polignac number, because 155008957 - 2¹¹ = 155006909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155008951) 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 in 3 ways as a sum of consecutive naturals, for example, 49783 + ... + 52804.

It is an arithmetic number, because the mean of its divisors is an integer number (38778264).

Almost surely, 2^155008957 is an apocalyptic number.

It is an amenable number.

155008957 is a deficient number, since it is larger than the sum of its proper divisors (104099).

155008957 is a wasteful number, since it uses less digits than its factorization.

155008957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104098.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 155008957 is about 12450.2593145685. The cubic root of 155008957 is about 537.1788824319.

The spelling of 155008957 in words is "one hundred fifty-five million, eight thousand, nine hundred fifty-seven".