155015134 has 4 divisors (see below), whose sum is σ = 232522704. Its totient is φ = 77507566.

The previous prime is 155015131. The next prime is 155015173. The reversal of 155015134 is 431510551.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 155015099 and 155015108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155015131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38753782 + ... + 38753785.

It is an arithmetic number, because the mean of its divisors is an integer number (58130676).

Almost surely, 2^155015134 is an apocalyptic number.

155015134 is a deficient number, since it is larger than the sum of its proper divisors (77507570).

155015134 is an equidigital number, since it uses as much as digits as its factorization.

155015134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77507569.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 155015134 is about 12450.5073792195. The cubic root of 155015134 is about 537.1860177397.

Adding to 155015134 its reverse (431510551), we get a palindrome (586525685).

The spelling of 155015134 in words is "one hundred fifty-five million, fifteen thousand, one hundred thirty-four".