155072122 has 8 divisors (see below), whose sum is σ = 232893972. Its totient is φ = 77440800.

The previous prime is 155072107. The next prime is 155072131. The reversal of 155072122 is 221270551.

It can be written as a sum of positive squares in 2 ways, for example, as 152547201 + 2524921 = 12351^2 + 1589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 45579 + ... + 48862.

Almost surely, 2^155072122 is an apocalyptic number.

155072122 is a deficient number, since it is larger than the sum of its proper divisors (77821850).

155072122 is an equidigital number, since it uses as much as digits as its factorization.

155072122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95264.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 155072122 is about 12452.7957503526. The cubic root of 155072122 is about 537.2518379930.

The spelling of 155072122 in words is "one hundred fifty-five million, seventy-two thousand, one hundred twenty-two".