157522020 has 96 divisors (see below), whose sum is σ = 452874240. Its totient is φ = 40897920.

The previous prime is 157522019. The next prime is 157522021. The reversal of 157522020 is 20225751.

It is an interprime number because it is at equal distance from previous prime (157522019) and next prime (157522021).

It is not an unprimeable number, because it can be changed into a prime (157522021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438601 + ... + 438959.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^157522020 is an apocalyptic number.

157522020 is a gapful number since it is divisible by the number (10) 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 157522020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226437120).

157522020 is an abundant number, since it is smaller than the sum of its proper divisors (295352220).

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

157522020 is a wasteful number, since it uses less digits than its factorization.

157522020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 157522020 is about 12550.7776651489. Note that the first 3 decimals coincide. The cubic root of 157522020 is about 540.0663155868.

Adding to 157522020 its reverse (20225751), we get a palindrome (177747771).

The spelling of 157522020 in words is "one hundred fifty-seven million, five hundred twenty-two thousand, twenty".