155145953 has 4 divisors (see below), whose sum is σ = 155174448. Its totient is φ = 155117460.

The previous prime is 155145943. The next prime is 155145959. The reversal of 155145953 is 359541551.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 155145953 - 2⁶ = 155145889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155145959) 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, 3251 + ... + 17912.

It is an arithmetic number, because the mean of its divisors is an integer number (38793612).

Almost surely, 2^155145953 is an apocalyptic number.

It is an amenable number.

155145953 is a deficient number, since it is larger than the sum of its proper divisors (28495).

155145953 is an equidigital number, since it uses as much as digits as its factorization.

155145953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28494.

The product of its digits is 67500, while the sum is 38.

The square root of 155145953 is about 12455.7598323025. The cubic root of 155145953 is about 537.3370876745.

The spelling of 155145953 in words is "one hundred fifty-five million, one hundred forty-five thousand, nine hundred fifty-three".