155751630 has 64 divisors (see below), whose sum is σ = 397509120. Its totient is φ = 38969216.

The previous prime is 155751613. The next prime is 155751641. The reversal of 155751630 is 36157551.

It is a junction number, because it is equal to n+sod(n) for n = 155751591 and 155751600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34441 + ... + 38699.

It is an arithmetic number, because the mean of its divisors is an integer number (6211080).

Almost surely, 2^155751630 is an apocalyptic number.

155751630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155751630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198754560).

155751630 is an abundant number, since it is smaller than the sum of its proper divisors (241757490).

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

155751630 is a wasteful number, since it uses less digits than its factorization.

155751630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 155751630 is about 12480.0492787489. The cubic root of 155751630 is about 538.0354196035.

It can be divided in two parts, 15575 and 1630, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 155751630 in words is "one hundred fifty-five million, seven hundred fifty-one thousand, six hundred thirty".