155552405 has 8 divisors (see below), whose sum is σ = 186739584. Its totient is φ = 124390800.

The previous prime is 155552393. The next prime is 155552417. The reversal of 155552405 is 504255551.

It is an interprime number because it is at equal distance from previous prime (155552393) and next prime (155552417).

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

It is not a de Polignac number, because 155552405 - 2¹⁶ = 155486869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11600 + ... + 21110.

It is an arithmetic number, because the mean of its divisors is an integer number (23342448).

Almost surely, 2^155552405 is an apocalyptic number.

It is an amenable number.

155552405 is a deficient number, since it is larger than the sum of its proper divisors (31187179).

155552405 is an equidigital number, since it uses as much as digits as its factorization.

155552405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12787.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 155552405 is about 12472.0649853984. The cubic root of 155552405 is about 537.8059177956.

The spelling of 155552405 in words is "one hundred fifty-five million, five hundred fifty-two thousand, four hundred five".