155263623 has 4 divisors (see below), whose sum is σ = 207018168. Its totient is φ = 103509080.

The previous prime is 155263613. The next prime is 155263631. The reversal of 155263623 is 326362551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155263623 - 2⁹ = 155263111 is a prime.

It is a super-2 number, since 2×155263623² = 48213585254172258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155263613) 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, 25877268 + ... + 25877273.

It is an arithmetic number, because the mean of its divisors is an integer number (51754542).

Almost surely, 2^155263623 is an apocalyptic number.

155263623 is a deficient number, since it is larger than the sum of its proper divisors (51754545).

155263623 is an equidigital number, since it uses as much as digits as its factorization.

155263623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51754544.

The product of its digits is 32400, while the sum is 33.

The square root of 155263623 is about 12460.4824545440. The cubic root of 155263623 is about 537.4729005988.

The spelling of 155263623 in words is "one hundred fifty-five million, two hundred sixty-three thousand, six hundred twenty-three".