151561093 has 2 divisors, whose sum is σ = 151561094. Its totient is φ = 151561092.

The previous prime is 151561087. The next prime is 151561127. The reversal of 151561093 is 390165151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142993764 + 8567329 = 11958^2 + 2927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151561093 is a prime.

It is a super-2 number, since 2×151561093² = 45941529822709298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151561063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75780546 + 75780547.

It is an arithmetic number, because the mean of its divisors is an integer number (75780547).

Almost surely, 2^151561093 is an apocalyptic number.

It is an amenable number.

151561093 is a deficient number, since it is larger than the sum of its proper divisors (1).

151561093 is an equidigital number, since it uses as much as digits as its factorization.

151561093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 151561093 is about 12311.0151084303. The cubic root of 151561093 is about 533.1661590193.

The spelling of 151561093 in words is "one hundred fifty-one million, five hundred sixty-one thousand, ninety-three".