155729914 has 4 divisors (see below), whose sum is σ = 233594874. Its totient is φ = 77864956.

The previous prime is 155729897. The next prime is 155729983. The reversal of 155729914 is 419927551.

155729914 is digitally balanced in base 3, 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: 419927551 = 43 ⋅9765757.

It can be written as a sum of positive squares in only one way, i.e., 118091689 + 37638225 = 10867^2 + 6135^2 .

It is a super-2 number, since 2×155729914² = 48503612228894792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38932477 + ... + 38932480.

Almost surely, 2^155729914 is an apocalyptic number.

155729914 is a deficient number, since it is larger than the sum of its proper divisors (77864960).

155729914 is an equidigital number, since it uses as much as digits as its factorization.

155729914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77864959.

The product of its digits is 113400, while the sum is 43.

The square root of 155729914 is about 12479.1792198045. The cubic root of 155729914 is about 538.0104128663.

The spelling of 155729914 in words is "one hundred fifty-five million, seven hundred twenty-nine thousand, nine hundred fourteen".