155070552 has 256 divisors, whose sum is σ = 520934400. Its totient is φ = 37324800.

The previous prime is 155070547. The next prime is 155070557. The reversal of 155070552 is 255070551.

It is an interprime number because it is at equal distance from previous prime (155070547) and next prime (155070557).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155070557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1535302 + ... + 1535402.

It is an arithmetic number, because the mean of its divisors is an integer number (2034900).

Almost surely, 2^155070552 is an apocalyptic number.

155070552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155070552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260467200).

155070552 is an abundant number, since it is smaller than the sum of its proper divisors (365863848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155070552 is a wasteful number, since it uses less digits than its factorization.

155070552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 155070552 is about 12452.7327121399. The cubic root of 155070552 is about 537.2500248834.

Subtracting 155070552 from its reverse (255070551), we obtain a palindrome (99999999).

The spelling of 155070552 in words is "one hundred fifty-five million, seventy thousand, five hundred fifty-two".