155054534 has 4 divisors (see below), whose sum is σ = 232581804. Its totient is φ = 77527266.

The previous prime is 155054519. The next prime is 155054539. The reversal of 155054534 is 435450551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 435450551 = 43 ⋅10126757.

It is a self number, because there is not a number n which added to its sum of digits gives 155054534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155054539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38763632 + ... + 38763635.

It is an arithmetic number, because the mean of its divisors is an integer number (58145451).

Almost surely, 2^155054534 is an apocalyptic number.

155054534 is a deficient number, since it is larger than the sum of its proper divisors (77527270).

155054534 is an equidigital number, since it uses as much as digits as its factorization.

155054534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77527269.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 155054534 is about 12452.0895435264. The cubic root of 155054534 is about 537.2315258473.

The spelling of 155054534 in words is "one hundred fifty-five million, fifty-four thousand, five hundred thirty-four".