155004361 has 4 divisors (see below), whose sum is σ = 155955472. Its totient is φ = 154053252.

The previous prime is 155004341. The next prime is 155004407. The reversal of 155004361 is 163400551.

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: 163400551 = 19 ⋅8600029.

It is a cyclic number.

It is not a de Polignac number, because 155004361 - 2⁵ = 155004329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155004341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475311 + ... + 475636.

It is an arithmetic number, because the mean of its divisors is an integer number (38988868).

Almost surely, 2^155004361 is an apocalyptic number.

It is an amenable number.

155004361 is a deficient number, since it is larger than the sum of its proper divisors (951111).

155004361 is an equidigital number, since it uses as much as digits as its factorization.

155004361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951110.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 155004361 is about 12450.0747387315. The cubic root of 155004361 is about 537.1735732795.

The spelling of 155004361 in words is "one hundred fifty-five million, four thousand, three hundred sixty-one".