155274056 has 64 divisors (see below), whose sum is σ = 354430080. Its totient is φ = 62254080.

The previous prime is 155273983. The next prime is 155274059. The reversal of 155274056 is 650472551.

It is a super-2 number, since 2×155274056² = 48220064933382272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155274059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200486 + ... + 201258.

It is an arithmetic number, because the mean of its divisors is an integer number (5537970).

Almost surely, 2^155274056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155274056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177215040).

155274056 is an abundant number, since it is smaller than the sum of its proper divisors (199156024).

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

155274056 is a wasteful number, since it uses less digits than its factorization.

155274056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 155274056 is about 12460.9010910126. The cubic root of 155274056 is about 537.4849388965.

The spelling of 155274056 in words is "one hundred fifty-five million, two hundred seventy-four thousand, fifty-six".