1372622155 has 4 divisors (see below), whose sum is σ = 1647146592. Its totient is φ = 1098097720.

The previous prime is 1372622131. The next prime is 1372622161. The reversal of 1372622155 is 5512262731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5512262731 = 23 ⋅239663597.

It is a de Polignac number, because none of the positive numbers 2^k-1372622155 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 1372622155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137262211 + ... + 137262220.

It is an arithmetic number, because the mean of its divisors is an integer number (411786648).

Almost surely, 2^1372622155 is an apocalyptic number.

1372622155 is a deficient number, since it is larger than the sum of its proper divisors (274524437).

1372622155 is an equidigital number, since it uses as much as digits as its factorization.

1372622155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274524436.

The product of its digits is 25200, while the sum is 34.

The square root of 1372622155 is about 37048.9157061310. The cubic root of 1372622155 is about 1111.3486717956.

Adding to 1372622155 its reverse (5512262731), we get a palindrome (6884884886).

The spelling of 1372622155 in words is "one billion, three hundred seventy-two million, six hundred twenty-two thousand, one hundred fifty-five".