1055388761 has 4 divisors (see below), whose sum is σ = 1206158592. Its totient is φ = 904618932.

The previous prime is 1055388727. The next prime is 1055388767. The reversal of 1055388761 is 1678835501.

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 not a de Polignac number, because 1055388761 - 2¹⁸ = 1055126617 is a prime.

It is a super-2 number, since 2×1055388761² = 2227690873690230242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055388767) 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, 75384905 + ... + 75384918.

It is an arithmetic number, because the mean of its divisors is an integer number (301539648).

Almost surely, 2^1055388761 is an apocalyptic number.

It is an amenable number.

1055388761 is a deficient number, since it is larger than the sum of its proper divisors (150769831).

1055388761 is an equidigital number, since it uses as much as digits as its factorization.

1055388761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150769830.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 1055388761 is about 32486.7474672365. The cubic root of 1055388761 is about 1018.1321580437.

The spelling of 1055388761 in words is "one billion, fifty-five million, three hundred eighty-eight thousand, seven hundred sixty-one".