155214023 has 4 divisors (see below), whose sum is σ = 157400208. Its totient is φ = 153027840.

The previous prime is 155214019. The next prime is 155214041. The reversal of 155214023 is 320412551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320412551 = 10589 ⋅30259.

It is a cyclic number.

It is not a de Polignac number, because 155214023 - 2² = 155214019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155214023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155214053) 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, 1092986 + ... + 1093127.

It is an arithmetic number, because the mean of its divisors is an integer number (39350052).

Almost surely, 2^155214023 is an apocalyptic number.

155214023 is a deficient number, since it is larger than the sum of its proper divisors (2186185).

155214023 is an equidigital number, since it uses as much as digits as its factorization.

155214023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186184.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155214023 is about 12458.4920034489. The cubic root of 155214023 is about 537.4156614021.

Adding to 155214023 its reverse (320412551), we get a palindrome (475626574).

The spelling of 155214023 in words is "one hundred fifty-five million, two hundred fourteen thousand, twenty-three".