155452417 has 8 divisors (see below), whose sum is σ = 156828672. Its totient is φ = 154082400.

The previous prime is 155452399. The next prime is 155452463. The reversal of 155452417 is 714254551.

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 155452417 - 2²³ = 147063809 is a prime.

It is a super-2 number, since 2×155452417² = 48330907902283778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155492417) 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, 58093 + ... + 60709.

It is an arithmetic number, because the mean of its divisors is an integer number (19603584).

Almost surely, 2^155452417 is an apocalyptic number.

It is an amenable number.

155452417 is a deficient number, since it is larger than the sum of its proper divisors (1376255).

155452417 is a wasteful number, since it uses less digits than its factorization.

155452417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its digits is 28000, while the sum is 34.

The square root of 155452417 is about 12468.0558628842. The cubic root of 155452417 is about 537.6906604667.

The spelling of 155452417 in words is "one hundred fifty-five million, four hundred fifty-two thousand, four hundred seventeen".