151157780 has 24 divisors (see below), whose sum is σ = 317678760. Its totient is φ = 60416000.

The previous prime is 151157779. The next prime is 151157789. The reversal of 151157780 is 87751151.

It can be written as a sum of positive squares in 4 ways, for example, as 64516 + 151093264 = 254^2 + 12292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151157780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151157789) 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, 35780 + ... + 39780.

It is an arithmetic number, because the mean of its divisors is an integer number (13236615).

Almost surely, 2^151157780 is an apocalyptic number.

151157780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151157780 is an abundant number, since it is smaller than the sum of its proper divisors (166520980).

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

151157780 is a wasteful number, since it uses less digits than its factorization.

151157780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5897 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 35.

The square root of 151157780 is about 12294.6240284118. The cubic root of 151157780 is about 532.6928100446.

The spelling of 151157780 in words is "one hundred fifty-one million, one hundred fifty-seven thousand, seven hundred eighty".