155451022 has 4 divisors (see below), whose sum is σ = 233176536. Its totient is φ = 77725510.

The previous prime is 155451001. The next prime is 155451029. The reversal of 155451022 is 220154551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155451029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38862754 + ... + 38862757.

It is an arithmetic number, because the mean of its divisors is an integer number (58294134).

Almost surely, 2^155451022 is an apocalyptic number.

155451022 is a deficient number, since it is larger than the sum of its proper divisors (77725514).

155451022 is an equidigital number, since it uses as much as digits as its factorization.

155451022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77725513.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 155451022 is about 12467.9999197947. Note that the first 4 decimals coincide. The cubic root of 155451022 is about 537.6890520845.

The spelling of 155451022 in words is "one hundred fifty-five million, four hundred fifty-one thousand, twenty-two".