102051397 has 4 divisors (see below), whose sum is σ = 116630176. Its totient is φ = 87472620.

The previous prime is 102051373. The next prime is 102051401. The reversal of 102051397 is 793150201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102051397 - 2¹⁹ = 101527109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102051347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289379 + ... + 7289392.

It is an arithmetic number, because the mean of its divisors is an integer number (29157544).

Almost surely, 2^102051397 is an apocalyptic number.

It is an amenable number.

102051397 is a deficient number, since it is larger than the sum of its proper divisors (14578779).

102051397 is an equidigital number, since it uses as much as digits as its factorization.

102051397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578778.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 102051397 is about 10102.0491485639. The cubic root of 102051397 is about 467.3113379844.

The spelling of 102051397 in words is "one hundred two million, fifty-one thousand, three hundred ninety-seven".