155455001 has 8 divisors (see below), whose sum is σ = 167693064. Its totient is φ = 143256960.

The previous prime is 155454983. The next prime is 155455007. The reversal of 155455001 is 100554551.

It can be written as a sum of positive squares in 4 ways, for example, as 203401 + 155251600 = 451^2 + 12460^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155455001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155455007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670 + ... + 17711.

It is an arithmetic number, because the mean of its divisors is an integer number (20961633).

Almost surely, 2^155455001 is an apocalyptic number.

It is an amenable number.

155455001 is a deficient number, since it is larger than the sum of its proper divisors (12238063).

155455001 is a wasteful number, since it uses less digits than its factorization.

155455001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155455001 is about 12468.1594872700. The cubic root of 155455001 is about 537.6936396956.

The spelling of 155455001 in words is "one hundred fifty-five million, four hundred fifty-five thousand, one".