155201051 has 8 divisors (see below), whose sum is σ = 159609120. Its totient is φ = 150804288.

The previous prime is 155201047. The next prime is 155201083. The reversal of 155201051 is 150102551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155201051 - 2² = 155201047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155201021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30455 + ... + 35183.

It is an arithmetic number, because the mean of its divisors is an integer number (19951140).

Almost surely, 2^155201051 is an apocalyptic number.

155201051 is a deficient number, since it is larger than the sum of its proper divisors (4408069).

155201051 is an equidigital number, since it uses as much as digits as its factorization.

155201051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 155201051 is about 12457.9713838169. The cubic root of 155201051 is about 537.4006894942.

The spelling of 155201051 in words is "one hundred fifty-five million, two hundred one thousand, fifty-one".