155020029 has 8 divisors (see below), whose sum is σ = 208271712. Its totient is φ = 102557520.

The previous prime is 155019989. The next prime is 155020037. The reversal of 155020029 is 920020551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155020029 - 2⁷ = 155019901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155019990 and 155020008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155020039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196834 + ... + 197619.

It is an arithmetic number, because the mean of its divisors is an integer number (26033964).

Almost surely, 2^155020029 is an apocalyptic number.

It is an amenable number.

155020029 is a deficient number, since it is larger than the sum of its proper divisors (53251683).

155020029 is a wasteful number, since it uses less digits than its factorization.

155020029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394587.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155020029 is about 12450.7039560018. The cubic root of 155020029 is about 537.1916720218.

The spelling of 155020029 in words is "one hundred fifty-five million, twenty thousand, twenty-nine".