151547993 has 2 divisors, whose sum is σ = 151547994. Its totient is φ = 151547992.

The previous prime is 151547987. The next prime is 151547999. The reversal of 151547993 is 399745151.

It is a balanced prime because it is at equal distance from previous prime (151547987) and next prime (151547999).

It can be written as a sum of positive squares in only one way, i.e., 116359369 + 35188624 = 10787^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 151547993 - 2¹⁴ = 151531609 is a prime.

It is not a weakly prime, because it can be changed into another prime (151547999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75773996 + 75773997.

It is an arithmetic number, because the mean of its divisors is an integer number (75773997).

Almost surely, 2^151547993 is an apocalyptic number.

It is an amenable number.

151547993 is a deficient number, since it is larger than the sum of its proper divisors (1).

151547993 is an equidigital number, since it uses as much as digits as its factorization.

151547993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 44.

The square root of 151547993 is about 12310.4830530731. The cubic root of 151547993 is about 533.1507973857.

The spelling of 151547993 in words is "one hundred fifty-one million, five hundred forty-seven thousand, nine hundred ninety-three".