102661054 has 4 divisors (see below), whose sum is σ = 153991584. Its totient is φ = 51330526.

The previous prime is 102661001. The next prime is 102661063. The reversal of 102661054 is 450166201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665262 + ... + 25665265.

It is an arithmetic number, because the mean of its divisors is an integer number (38497896).

Almost surely, 2^102661054 is an apocalyptic number.

102661054 is a deficient number, since it is larger than the sum of its proper divisors (51330530).

102661054 is an equidigital number, since it uses as much as digits as its factorization.

102661054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51330529.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 102661054 is about 10132.1791338290. The cubic root of 102661054 is about 468.2400666454.

The spelling of 102661054 in words is "one hundred two million, six hundred sixty-one thousand, fifty-four".