155350994 has 4 divisors (see below), whose sum is σ = 233026494. Its totient is φ = 77675496.

The previous prime is 155350991. The next prime is 155351023. The reversal of 155350994 is 499053551.

It is a happy number.

155350994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499053551 = 4153 ⋅120167.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 43731769 = 10565^2 + 6613^2 .

It is not an unprimeable number, because it can be changed into a prime (155350991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38837747 + ... + 38837750.

Almost surely, 2^155350994 is an apocalyptic number.

155350994 is a deficient number, since it is larger than the sum of its proper divisors (77675500).

155350994 is an equidigital number, since it uses as much as digits as its factorization.

155350994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77675499.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 155350994 is about 12463.9878851032. The cubic root of 155350994 is about 537.5736984937.

The spelling of 155350994 in words is "one hundred fifty-five million, three hundred fifty thousand, nine hundred ninety-four".