155053641 has 4 divisors (see below), whose sum is σ = 206738192. Its totient is φ = 103369092.

The previous prime is 155053637. The next prime is 155053669. The reversal of 155053641 is 146350551.

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: 146350551 = 3 ⋅48783517.

It is not a de Polignac number, because 155053641 - 2² = 155053637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155053599 and 155053608.

It is not an unprimeable number, because it can be changed into a prime (155053631) 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, 25842271 + ... + 25842276.

It is an arithmetic number, because the mean of its divisors is an integer number (51684548).

Almost surely, 2^155053641 is an apocalyptic number.

It is an amenable number.

155053641 is a deficient number, since it is larger than the sum of its proper divisors (51684551).

155053641 is an equidigital number, since it uses as much as digits as its factorization.

155053641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51684550.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 155053641 is about 12452.0536860391. The cubic root of 155053641 is about 537.2304944926.

The spelling of 155053641 in words is "one hundred fifty-five million, fifty-three thousand, six hundred forty-one".